Donna is studying phase changes. She claims that since the three phases have different amounts of energy, molecules in substances gain or lose energy only during phase transitions. What is incorrect about this claim?
Molecules gain or lose energy during any temperature change, not just phase changes.
Molecules do not have any energy changes, because they have a set amount of energy all the time.
Molecules are constantly losing energy, no matter what phase change is happening.
Energy levels are not related to phase changes.
Answers
The molecules do gain or loose energy from surrounding all the time depending on the temperature difference. So its not only during the state changes.
Option A.
Explanation:The molecules in a particle has a particular amount of energy all the time. This is the molecular kinetic energy that owes to the vibration of a molecule at a particular time.
In case of a temperature difference between a matter and its surrounding, the molecules do either absorb energy or emit energy. During a state change, the energy absorption or emission is huge, which leads to the change of state, and there's no change in temperature of the matter at that particular time. So energy changes do occur at any time, not only during the change of state
Answer: Molecules gain or lose energy during any temperature change, not just phase changes.
Explanation: Molecules can experience an increase in temperature in circumstances other than phase changes. Also, i got 100 on the exam
Related Questions
What is a main difference between a mixture and a pure substance?
Answers
Answer:
A mixture is made up of more than one element while a pure substance is made up of one type of atom.
Explanation:
Answer:
A mixture can vary in composition, but a pure substance has a set composition.
Explanation:
right on edg
The voyage of the HMS challenger was important because
Answers
Answer:
HMS Challenger is an expedition that happened in the 19th century. With this expedition, modern oceanography began.
Explanation:
This expedition answered many questions regarding the sea world. It was organized especially for collecting data about the ocean world, like the temperature of the water, currents, ocean life, etc.
HMC challenger helped to discover more than 4000 unknown species.
Will give brainliest plz help I only need help with the 2nd question
Answers
Answer:
Secondary Consumers
Explanation:
If the larvae eat the needles, they are the primary consumers and herbivores. Because they eat the larvae, the birds become the secondary consumer. Tertiary consumers are at the top of the food chain, and eat secondary consumers and primary consumers. Primary producers are energy producing things like plants, etc.
BRAINLIEST!! According to embryology, why do fish and birds have a common ancestor?
They both have embryos with gill slits and tails.
They both have embryos with traits that eventually disappear.
They both have embryos that develop into adults.
They both have embryos that form from a fertilized egg.
Answers
Answer:
Both fish and bird embryos exhibit gill slits and a tail.
Explanation:
According to embryology, all vertebrates exhibit similar traits and structures at their embryonic stage. It becomes very difficult to differentiate between the embryos of a fish, and that of a bird, or embryo of a fish, and a human. These traits, however, disappear, as the case may be, as the embryo develops into an adult. For example, in the case of the embryo of a fish, and a bird, both shows gills slits at their respective embryonic stage. However, the gill slits in fish develop into gills, whereas in the case of birds, it disappears as the embryo develops into an adult.
The Milky Way is held together by a black hole's gravitational force. Since the stars near this black hole move at a high speed, what can you
infer about the black hole?
A. Its location
B. Its size
C. Its depth
D. Its speed
Answers
The high speed of stars near the Milky Way's central black hole suggests that it has a large mass, specifically around 4 million solar masses, which significantly affects their orbital velocity and the dynamics of the galaxy.
Explanation:Given the high speed of stars near the black hole at the center of the Milky Way, we can infer that the black hole has a very large mass. The mass of the black hole has been estimated at about 4 million solar masses, based on the orbital dynamics of nearby stars. These stars move at significant velocities, which is a direct consequence of the black hole's gravitational force. According to the observations from radio telescopes and the application of Kepler's third law, all of this mass is confined within a region smaller than the orbit of Mercury, which signifies that the black hole is both incredibly dense and massive.
This concentration of mass creates a gravitational pull that influences the stars and other matter in its vicinity, leading to high orbital speeds. Such a supermassive black hole holds galaxies like our Milky Way together and plays a fundamental role in their dynamics. In this case, we can conclude that the correct answer is B. Its size, meaning the mass of the black hole, since 'size' in this context refers to mass rather than physical dimensions like volume or diameter.
What are some other ways that the reaction rate of the cooking food can be increased? Explain your answers.
Answers
Answer:
you could add an enzyme to speed up the reaction time and lower the amount of energy needed for the reaction
7. In this unit, we learned about severe weather disasters and their repercussions. According to Murphy, explain how reducing the initial emergency response by one day can reduce the overall recovery by 1000 days? (40 points)
Answers
Swift emergency responses to severe weather disasters effectively reduce recovery time. The quicker issues are addressed, the quicker they can be resolved, leading to faster post-disaster recovery. Thus, reducing initial response time by a day can shorten the recovery period by up to a thousand days.
Explanation:The student's question involves understanding how reducing the initial emergency response can significantly reduce the overall recovery time in the context of severe weather disasters. The primary consideration is the concept of preparedness and prompt emergency action. A lack of preparedness or delayed action can exacerbate the consequences of severe weather disasters, as can be seen in instances like the Texas power grid crash.
Based on Murphy's work, reducing the initial emergency response time by one day can significantly speed up recovery. This is because a quicker response can prevent issues from escalating. For example, quicker responses can help in faster resource allocation, reduction of infrastructure damage, and can prevent humanitarian crises. These factors, if promptly addressed, avoid the accumulation of problems that would take an extended period to recover from.
In summary, the relationship between emergency response and recovery time is almost directly proportional. The faster governments and agencies respond to crisis situations, the quicker communities can bounce back and return to normal.
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Another name for a difficult birth is
A: dysplasia
B: dystopia
C: dystocia
D: dyskinesia
Answers
Answer:
C, Dystocia
Explanation:
Definition of Dystocia - difficult birth, typically caused by a large or awkwardly positioned fetus, by smallness of the maternal pelvis, or by failure of the uterus and cervix to contract and expand normally.
By what cellular process does hair grow back
Answers
Answer:
The hair growth cycle consists of three phases: anagen, catagen, and telogen. Anagen, the growth phase, lasts between 3 and 10 years. During this phase, rapid cell division occurs in the hair bulb and dermal papilla. In addition, new hairs begin to protrude from the scalp.
Explanation:
Hair grows back due to cell division or mitosis in the hair follicles, specifically the division of stem cells. This process is cyclic, consisting of three phases (anagen, catagen, telogen), averaging a growth rate of about 0.3 mm per day. Diet, hormones, and aging can impact this growth cycle.
Hair growth is a result of the cellular process known as mitosis, taking place within the hair follicle. It begins with the division of stem cells, which generate new keratinocytes, the cells that make up most of the hair shaft. The hair growth cycle consists of three distinct phases:
The anagen phase: This growth phase involves rapid cell division at the root of the hair, which lasts from 2 to 7 years and pushes the hair shaft upward.The catagen phase: A transitional phase that lasts 2 to 3 weeks, signaling the end of active hair growth.The telogen phase: A resting phase where no growth occurs, lasting about 2 to 4 months. Post this phase, a new anagen phase begins, pushing out the old hair.These phases ensure that hair grows, sheds, and is replaced in a cyclical pattern. Growth rates average at about 0.3 mm per day or 1 cm per month. Factors such as protein-inadequate diets, hormonal changes, or the aging process can affect this cycle, potentially leading to hair loss.
As of 2011, an estimated _____ a0 percent of the U.S. workforce was working in agriculture-related jobs.
I cannot find an answer to this!
Answers
Answer:
In 2011 an estimated 1.65% of the US workforce was employed/working in the Agriculture-related sector of the economy
Explanation:
Agriculture has been a major source of jobs for most countries especially with developing/underdeveloped countries ranking in the highest percentage of their country's population working in this sector, while developed countries like the US have smaller percentage of the population working agriculture-related jobs. as of 2011 chad had an estimated 86.67% of their population involved with Agriculture-related jobs
Binary fission is the most common form of reproduction in
Answers
Answer:
Binary fission is the most common form of reproduction in prokaryotes such as bacteria.
Explanation:
The process of binary fission can be described as a kind of asexual reproduction. Asexual reproduction is the method of reproduction in which a parent cell produces two new daughter cells which are identical to one another and to the parent cell.
During binary fission, the parent cell divides into two by splitting. The DNA replicates itself and moves to opposite directions so that each cell receives one copy of the DNA. Finally, the cells split. This method of replication is common in prokaryotes such as bacteria.
Binary fission is the most common form of reproduction in prokaryotes, such as bacteria and archaea.
What happens During Binary fission?During binary fission, a single prokaryotic cell divides into two identical daughter cells.
The process involves DNA replication, elongation of the cell, and the eventual splitting of the cell into two separate entities.
This form of asexual reproduction allows prokaryotes to rapidly increase their population and is a key factor contributing to their success and prevalence in various environments.
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Which of the characteristics of life is displayed by the following statement: "When you step out into the cold, your body shivers in order to keep its temperature at 98.6F." Question 7 options: All living things maintain homeostasis. All living things contain cells. All living things grow.
Answers
Answer:
The answer is "All living things maintain homeostasis." Homeostasis is the process of maintaining equilibrium and balance in the body in relation to the various cellular processes.
Explanation:
There are 7 characteristics of life:
A body should grow and change.A body should react to the external environment.It should have the capacity to reproduce.A body should be made up of cells.A body should be capable of passing traits to its offspring.It should have a metabolic system and should be able to breathe.It should have the capacity to maintain homeostasis.Homeostasis is responsible for the maintenance of variables like core temperature, glucose, iron level, oxygen level,pH, cerebrospinal fluid, etc. Humans and mammals regulate their temperature through allostasis. In case of extreme cold, the blood supply to the body is reduced through vasoconstriction. In case of high temperature, the sweat glands are activated which allow the body to cool down.
The characteristic of life displayed by the statement "When you step out into the cold, your body shivers in order to keep its temperature at 98.6F" is all living things maintain homeostasis. Correct Option is 1.
Homeostasis refers to the ability of living organisms to regulate and maintain a stable internal environment despite changes in the external environment. In the given statement, the body's response of shivering to maintain its temperature at a specific level (98.6°F) demonstrates the process of homeostasis. Shivering is a physiological response that generates heat and helps to counteract the cooling effect of the cold external environment, thereby maintaining the body's internal temperature within a narrow range. This is a vital characteristic of living organisms to ensure their proper functioning and survival.
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What happens in the human body as heart rate is increasing?
Answers
Which of the components could be observed using a microscope in a prepared slide of leaf epidermal cells but not in a prepared slide of human cheek cells?
Answers
Leaf epidermal cells visible structures under a microscope which are absent in human cheek cells include chloroplasts for photosynthesis, stomata and guard cells for gas exchange, and cell walls providing structural support.
Explanation:Components of leaf epidermal cells that can be observed using a microscope but not in a prepared slide of human cheek cells include several unique structures. Chloroplasts, the structures within plant cells responsible for photosynthesis are present in leaf epidermal cells but not in human cheek cells, as human cells do not perform photosynthesis. Additionally, leaf epidermal cells may exhibit structures such as stomata and guard cells, which are involved in gas exchange, and these structures are also not found in human cells. Lastly, the cell walls that surround plant cells provide extra structural support, are also visible in leaf epidermal cells but absent in human cheek cells, as animal cells such as those in the human cheek do not have cell walls.
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In a prepared slide of leaf epidermal cells you could observe chloroplasts, cell wall, and stomata, which are not present in human cheek cells.
Explanation:When examining a prepared slide of leaf epidermal cells under a microscope, you would be able to observe several components not present in a prepared slide of human cheek cells. One key structure you might see are the chloroplasts, which are responsible for photosynthesis in plant cells. Another distinctive feature could be the cell wall, which provides rigidity and protection to plant cells. In addition, you may observe stomata surrounded by guard cells, which are involved in gas exchange and are unique to plant cells. These elements are absent in animal cells like human cheek cells, which only have a flexible cell membrane and lack chloroplasts, a rigid cell wall, and stomata.
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Scientists now know how much carbon dioxide was present in the atmosphere as far back as 800,000 years ago. How did they obtain this data?
Answers
Answer:
Ice core records.
Explanation:
The origin of man took place about 200,000 years ago and looking at the records that are stored in the ice cores before the existence of man which were found by the deep drilling of the antarctic and Greenland shows that how the temperatures have changed and as the example of the carbon in the air. As in the 800,000 years go the Carbon dioxide levels were on average of 170 to 280 ppm and now they have crossed the 400 ppm mark also at that time the sea levels were high as 80 feet and now are more than 100 feet.Answer:
Scientists now know how much carbon dioxide was present in the atmosphere as far back as 800,000 years ago. How did they obtain this data?
fossil finds
computer models
ice cores
glacier striations
Explanation:
Answer Ice Cores
Scientists use several methods to reveal Earth’s climate history. These methods include the study of glacial striations, fossils, and ice cores.
As glaciers move, they trap and drag rocks beneath them. The grooves that result in the underlying landscape are called glacial striations. Glacial striations have been found in areas of the world that are not currently covered in glaciers, but which must have been covered in ice sheets at some point.
20 points help PLEASE!!! Match the following items.
1. intentional learning
2. chunking
3. long-term memory
4. encoding
deliberately placing information into
your mind
grouping items into smaller segments
the process of placing information
into the mind
permanent storage of information
Answers
Answer:
1. intentional learning
deliberately placing information into your mind
2. chunking
grouping items into smaller segments
3. long-term memory
permanent storage of information
4. encoding
the process of placing information into the mind
Explanation:
Not too much to explain because those are the definitions.
1. Intentional means on purpose. Deliberate also means on purpose.
2. Chunking is to break into smaller pieces.
3. The long-term memory remember information for the "long-term", almost permanent, (as opposed to the short-term memory).
Answer:
1. intentional learning
deliberately placing information into your mind
2. chunking
grouping items into smaller segments
3. long-term memory
permanent storage of information
4. encoding
the process of placing information into the mind
A professor of biology has completed an experiment on speciation. The results indicate that the current understanding of how speciation occurs is incomplete. Which is the most appropriate way to share the results of this experiment?
Sell findings to a newspaper or magazine
Publish in a scientific journal for peer review
Hold a press conference
Share with classes of university students
Answers
Answer:
The most appropriate way of sharing the results is to publish in a scientific journal for peer review. So the answer is 'B'.
Explanation:
In order to validate your results in the scientific community, it is best to publish in a scientific journal and get it peer reviewed. When the article is peer reviewed, other scientists of higher caliber verify your experiment and results and then give their verdict to the outside world.
Newspapers sometimes also publish rumors. So there is no guarantee what gets published is true. the students are still learning and cannot appreciate the full extent of your work.
Between Point A and Point C, where is the steepest part of the hike? How do you know?
Answers
Answer:
Going down Burr Hill; the contour lines are close together.
Explanation:
Between Points A and C, the steepest part is going down Burr Hill.
I know that, because the contour lines are so close together.
That means your vertical descent is quite steep compared to the distance you cover horizontally.
What is needed for DNA replication? Select all that apply.
Answers
Final answer:
DNA replication requires DNA polymerase, DNA helicase, DNA ligase, and primase.
Explanation:
The key components needed for DNA replication are:
DNA polymerase: This enzyme is responsible for adding new nucleotides to the growing DNA strand.DNA helicase: This enzyme unwinds and separates the DNA strands at the replication fork.DNA ligase: This enzyme joins together the Okazaki fragments on the lagging strand.Primase: This enzyme synthesizes RNA primers that are necessary for DNA polymerase to begin replication.DNA replication is a complex process that involves the coordination of multiple enzymes and factors to accurately copy the DNA molecule.
Which is an example of how the atmosphere interacts with the hydrosphere
Answers
Temperature is a major factor in evaporation, the transfer of water from the hydrosphere to the atmosphere. The higher a location's temperature, the more easily water evaporates at that location.
Which of the following is the SI unit used in measuring the temperature of a hot cup of coffee
Answers
The correct options are C and D.
The SI unit used for measuring the temperature of a hot cup of coffee is Celsius (°C) or Kelvin (K).
The SI unit used in measuring the temperature of a hot cup of coffee is the Celsius (C) or Kelvin (K). Here's a breakdown of the options:
A. Centigrade:
- Centigrade is an old term that used to refer to the Celsius scale, but it is no longer widely used in the scientific community.
- Celsius and centigrade are essentially the same scale with the same units.
B. Joule:
- Joule is not a unit of temperature. It is the SI unit of energy.
C. Celsius:
- Celsius (°C) is the SI unit for measuring temperature in the metric system.
- It is commonly used for everyday temperature measurements, including the temperature of a hot cup of coffee.
D. Kelvin:
- Kelvin (K) is also an SI unit for measuring temperature.
- It is used in scientific and thermodynamic calculations, especially in situations where absolute temperature is necessary, such as in the ideal gas law.
So, the correct SI units for measuring the temperature of a hot cup of coffee are either Celsius (°C) or Kelvin (K), making options C and D correct. However, Celsius (°C) is more commonly used in everyday contexts.
The complete question is here:
Which of the following is the SI unit used in measuring the temperature of a hot cup of coffee?
A. centigrade
B. Joule
C. celsius
D. Kelvin.
What are the basic types of immune system cells? Select all that apply.
lymphocytes
O red blood cells
o granulocytes
monocytes
o antigens
DONE
Answers
Answer:Lymphocytes
Monocytes
Granulocytes
Explanation: Granulocytes is a category of the types of white blood cells.
White blood cells are the cells responsible for body immunity and they consisit of 5 types among which are Lymphocytes and Monocytes
Answer:
All the 'cytes
Explanation:
Which is part of the alimentary canal?
A. Kidney
B. Liver
C. Small intestine
D. Heart
-Apex
Answers
Answer:
small intestine
Explanation:
The alimentary canal comprises of the mouth, pharynx, esophagus, stomach, small intestine, and large intestine
Answer:
C
Explanation:
The digestive system's alimentary tract is made up of the mouth, throat, esophagus, stomach, small and large intestines, rectum, and anus.
limitation of modern periodic table
Answers
Answer:
Following are the limitations of the modern periodic table:
In the modern periodic table, the exact position of the element, hydrogen, has yet not been decided. Another drawback of the modern periodic table is that the lanthanides and actinides series are not located in the main body of the periodic table.Many elements have different isotopes. There is no location for adding the isotopes in the periodic table.
When a plant is not watered, it dies because it cannot ________.
Answers
Answer:it cannot perspirate.
Explanation:
Plant need water to survive. It needs water to dissolve the nutrient in the soil, and transport it from around its leaves through its stem cells...
A major function of a plant's roots is to...???
Answers
A major function of the roots of a plant is to absorb water to produce food for the organism. They need water to produce the glucose product of food, the other reactant is carbon dioxide. This is the process of photosynthesis. The other product is oxygen
- Oxygen, substance all organisms require to survive.
- Glucose, substance produced and used by plant organisms for food.
- Reactant, substances used to make products.
- Carbon Dioxide, gas found floating in air, used by plants to make oxygen.
- Photosynthesis, the process where plants use their chlorophyll to make substances like food
Hope this helps, if not, comment below please!!!!!
What is gene regulation?
O
A. The manner in which phenotypes differ from genotypes
O
B. The total number of genes a person has
O
O
c. The control of when and where proteins are made
D. The number of proteins an organism can produce
Answers
Gene regulation is basically an on/off switch that controls when proteins are made (in response to things, typically) and how many are made.
The control of when and where proteins are made.
The process can be complicated and is carried out by a variety of mechanisms, including through regulatory proteins and chemical modification of DNA.What is gene regulation?
Gene regulation is the process used to control the timing, location and amount in which genes are expressed.
Regulation of gene expression is a complex process that can be controlled at several steps, including:-
Transcription. Pre-mRNA splicing and export.mRNA stability.Translation. Protein modification.Protein half-life.To know more about gene here
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State one use of lipid in the body
Answers
Answer:the body uses lipids as an energy store,as insulation and to make cell membranes.
Explanation:lipids include fats(solid at room temperature) and oils (liquor at room temperature).lipids are an important part of healthy diet.
Answer: The use of lipid is as follows:
Explanation:
A lipid is chemical substance which is insolube in water but can be dissolved in the organic solvent like alcohol.The lipid is an important component of the cells of the living beings.The cholesterol and triglycerides are the examples of lipids. The lipid is composed of carbon, oxygen and hydrogen. The lipid transport the vitamins like A, D,K and E and aid their digestion in the small intestine.
what two things are needed to make a geomagnetic time scale?
Answers
Answer:
Geomagnetic north and south pole.
Explanation:
It is primarily dipolar (That is, it has two poles, the geomagnetic North and South poles) on Earth’s surface. Away from the surface the dipole becomes distorted.
a gazzelle eats grass and later eaten by Tiger which is the prey
Answers
Answer: The gazelle is the prey
Explanation:
Predation occurs when an organism (in this case, the tiger) known as a predator kills and eats another ( the gazelle) known as a prey