Solids have a high density because the particles are very close together, a liquid mass is slightly less dense, and a gas mass has a very low density with the particles much further apart.
What Is a Density?The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. Density Formula: D or Density Symbol: D ρ = m/V where the object's mass (m), its volume (V), and its density () are all given.
Generally, gases are less dense than liquids, while liquids are less dense than solids. This is due to the fact that solids have tightly packed particles, liquids have materials in which particles can slide around, and gases have free-moving particles.
Therefore, Gasses are less dense than solids because particles are far away from each other in gas masses.
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Heat energy is transferred on Earth by the processes of convection, conduction, and radiation. How does heat energy cause materials to move during convection? Complete the sentences below.
It causes denser materials to ______.
It causes less dense materials to ______.
Answer choices are Rise, Sink, Reflect, Absorb.
Answer:
Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. Both conduction and convection require matter to transfer heat. If there is a temperature difference between two systems heat will always find a way to transfer from the higher to lower system.
In heat transfer by convection, heat energy causes denser materials to sink and causes less dense materials to rise.
What is heat transfer?Heat transfer refers to the process by which heat energy is transferred from one point at higher temperature to another at lower temperature.
Heat energy is transferred on Earth by the processes of convection, conduction, and radiation.
Thus, during convection, heat energy causes denser materials to sink and causes less dense materials to rise.
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please help me, i dont like this
Answer:
This is true! Hope dis helps! :)
Explanation:
Answer:
True
Explanation:
I really hope this helped. I did this a long while back so I hope its right. Have a nice day :)
Question: What is it that lives if it is fed, and dies if you give it a drink?
A.fire
B,anaimals
C.humans
D.ants
Hi, can somebody please explain this activity to me and what do I do for the graph here? Thanks.
6. In neighboring water molecules, oxygen is attracted to ____
forming a ____ bond
Answer:
hydrogen, covalent
Explanation:
What are the two types of venomous snakes? Describe each type and include an example.
Answer:
The King Cobra and the Black Mamba
EXPLANATION:
The black mamba is a species of highly venomous snake belonging to the family Elapidae. It is native to parts of sub-Saharan Africa. First formally described by Albert Günther in 1864, it is the second-longest venomous snake after the king cobra; mature specimens generally exceed 2 m and commonly grow to 3 m
The king cobra, also known as the hamadryad, is a venomous snake species in the family Elapidae, endemic to forests from India through Southeast Asia. It is threatened by habitat destruction and has been listed as Vulnerable on the IUCN Red List since 2010. It is the world's longest venomous snake.
Answer:
The two types of venomous snakes are Elapine snakes, and Viperine snakes. Elapine snakes have shorter fangs and venom that paralyzes the respiratory system. Cobras and coral snakes are Elapine snakes. Viperine snakes have longer hollow fangs and venom that attacks red blood cells. Rattlesnakes are viperine snakes.
Explanation:
Help me with this question?
Answer:
Hey you called me dumb, but i will answer
meiosis
Explanation:
An experiment was performed to determine the health effects of different amounts of second-hand smoke on one-year-old hamsters. What is the Independent Variable of the experiment?
Answer:
Independent variable: different amounts of second-hand smoke
Explanation:
The independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring about a measurable response.
In this question, a test is being carried out to determine the health effects of different amounts of second-hand smoke on one-year-old hamsters. Based on this, the independent/manipulated variable is the DIFFERENT AMOUNTS OF SECOND-HAND SMOKE because it is the variable being changed.
do trees Make their own energy every day
Answer:Trees and other green plants are the source of energy for all animal life to live and grow. Through the process of photosynthesis plants change light energy from the sun into chemical energy that is stored in the plant as carbohydrates (sugars) as it grows
Explanation:
what would represent represent the genotype of a heterozygous pea plant?'
A.white
B.purple
C.PP
D.Pp
Answer:
Pp
Explanation:
write essay about connective tissue?
please write correct answer
Chloroplasts and Mitochondria reproduce independently from the eukaryotic cell it is within.
True or false?
Which of the following statements about solid waste recycling is false?
A. Less expensive for customers who separate their trash before pick up than to use high technology recovery plants
B. Glass, iron and aluminum can be recovered from solid waste
C. Low tech resource recovery involves customers separating trash into categories like paper, glass, plastics and metals
D. High technology recycling provides many more jobs than low technology recycling
E. Materials recovery facilities need a large input of garbage to be financially successful
Answer:
D) High-technology recycling provides many more jobs than low-technology recycling
Explanation:
Do you think these fish are an example of natural selection among two populations of the same species? Explain your answer.
Answer:
It depends on the fish (I do not see any pictures) Any fish is an example of natural selection.
Explanation:
A good example would be that polar bears grew and evolved to have white fur to blend in the snow to sneak upon prey. However, their brown bear counterparts failed to do that. So due to better camouflage and hunting technique, the polar bears survived more up north.
Answer:
The two fish are of the same species because they can mate with each other. Also, the characteristics of the blind cave fish enable them to live in caves. Eyes need energy. So, developing bodies with no eyes allowed these fish to function more efficiently.
Explanation:
How does DNA code for traits? Explain your response
Answer: ................................................................................................
Explanation:
what explains why water moves from the roots to the leaves of plants
Answer: The word you are looking for is cohesion
Explanation.it is important for moving water from the roots to leaves
Water is made of three atoms. This means it is
Carrie conducted an experiment to see if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. She had 10 volunteers. Each of the first 5 volunteers listened to seven different music selections for 30 seconds each. The person’s pulse was taken before the music and after each 30-second interval of music was completed. The other 5 volunteers did not listen to music and had their pulse taken every 30 seconds for 5 minutes. Based on her experiment, Carrie concluded that a person’s pulse rate did change when the person listened to different types of music. Identify the control group, the experimental group, the independent variable, and the dependent variable.
Answer:
Independent variable: MUSIC
Dependent variable: PULSE
Control group: The 5 volunteers that did not listen to music.
Experimental group: The 5 volunteers that listened to seven different music selections for 30 seconds each
Explanation:
- Independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring about a measurable response. In this experiment, the independent variable is DIFFERENT TYPES OF MUSIC THAT WAS PLAYED BY CARIE.
- Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable being measured in an experiment. The PULSE, which was measured in this experiment, is the DEPENDENT VARIABLE.
- Control group is the group of an experiment that does not receive the experimental treatment. In this experiment, the GROUP OF 5 VOLUNTEERS THAT DID NOT LISTEN TO ANY MUSIC is the CONTROL GROUP.
- Experimental group is the group that is subjected to the experimental treatment in an experiment. In this experiment, the GROUP OF 5 VOLUNTEERS THAT LISTENED TO SEVEN DIFFERENT TYPES OF MUSIC IS THE EXPERIMENTAL GROUP.
Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure
water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?
a. water molecules move out of the cells
b. water molecules move into the cells.
c. salt ions move out of the cells.
d. salt ions move into the cells.
Answer:c salt ions move out of the cell
Explanation:
Salt is less than 1
Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. This results into water molecules . Thus, the correct option is C.
What is Osmosis?Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential or lower solute concentration to a region of low water potential or higher solute concentration, in the direction which tends to equalize the solute concentrations on the two sides of the membrane.
It is of two types, on the basis of movement of solvent particles, when the solvent moves inside the cell it is called endosmosis which results into turgid cells and the movement of solvent molecules outside the cell which is called exosmosis that results into flaccid cells.
Therefore, the correct option is C.
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Can water speed up the movement of food and waste through the digestive system
Answer:
No
Explanation:
Find the area of a circle with diameter 20cm and the advantages and
why the answer is C not D?
Answer:
Diffusion describes the movement of particles from an area of higher to lower concentration. That is what the ink is doing when it spreads throughout the jelly. Osmosis only occurs across a semipermeable membrane.
Answer:
osmosis is movement of particles through a semipermeable membrane from the region of high concentration to region of low concentration while diffusion is the movement of particles from a region of higher concentration to a region of lower concentration.
Explanation:
here there is no semipermeable membrane hence the correct answer is diffusion.
Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply.
Answer: Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
Answer:
B and D
Part 2 is C
Explanation: edge
The most important function of nucleic acids is
Answer:
The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
Explanation:
The most important function of the nucleic acids is to store and express the genetic information of the cell in the form of DNA (deoxyribonucleic acid).
What is Nucleic acid?
Nucleic acids are the naturally occurring biochemical compounds which serve as the primary information-carrying molecules in the cells.
The important functions of nucleic acids is the storage and expression of the genetic information in the cell in the form of DNA. Deoxyribonucleic acid (DNA) encodes the information the cell requires to synthesize proteins. Another type of nucleic acid is called ribonucleic acid (RNA), it comes in different molecular forms which participate in protein synthesis.
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What can you do to play an active role in cancer prevention?
Answer: Although humans cannot prevent all cancers, a healthy diet and weight followed by adequate exercise, sleep, and stress reduction all play a part in cancer reduction.
Cancer occurs when cells multiply uncontrollably and are not "cleaned up" by the body. We are dependent on our bodies recognizing and destroying old cells and foreign substances like toxins. When our body's fail to do this, either through stress, poor diet or being sedentary, cancer could result.
Hope this helps.
hich is a similarity between alcohol fermentation and aerobic respiration?
Both require oxygen.
Both require light energy.
Both start with glycolysis.
Both produce alcohol.
Answer:
B they both give information
Explanation:
correct 2022
What type of energy change cause the leaf to grow?
A. Electromagnetic energy is transferred into chemical energy
B. Thermal energy is transformed into potential energy
C. Electromagnetic energy is transferred to the leaf
D. Thermal energy is transferred to the leaf
Answer:Electromagnetic energy is transferred into chemical energy
Explanation:photosynthesis
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose.
Which process takes longer, primary succession or glacial retreat?
Answer:
I think it is primary sucession
Explanation:
the process takes a long time
Food we eat has not been modified through selective breeding.
a) True
b) False
*No wrong answers please.*
Answer: True.
Quizlet is a very good resource to use for problems like this.
Food we eat has not been modified through selective breeding. This statement is true.
What is selective breeding?Selective breeding is the process where individual organisms with certain desirable traits are selectively bred for the purpose of propagating that particular trait.
Selective breeding is applied in agriculture for the purposes of rearing or cultivating high yielding breeds of farm animals and crops.The food we eat has been modified through selective breeding. Hence the statement: Food we eat has not been modified through selective breeding.
Milk production selective breeding has bee applied in milk production by selectively rearing cows with high milk production as planting of disease-resistant crops selective breeding has been applied in the cultivation of disease resistant crops.
Therefore, Food we eat has not been modified through selective breeding. This statement is true.
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What medical conditions do scientists hope botulinum will help? Check all that apply. *
hyperactive muscles
Parkinson’s disease
cerebral palsy
common cold
Answer:
hyperactive muscles
Parkinson’s disease
cerebral palsy
Explanation:
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Please hurry
Which is an example of a
deletion mutation that results in a new protein?
A. CAT-CGA-TCC mutates to CAC-TCG-ATC-C
B. ATT-CGG-CCA mutates to AAC-CGG-CCA
C. ATT-CGG-CCA mutates to AAT-CGG-ATT-CCA
D. CAT-CGA-TCC mutates to CAT-TCC
Answer:
D. the answer is CAT-CGA-TCC mutates to CAT-TC
Explanation:
Answer:
The answer is D.
Explanation: