Look at the photo on page 41 of your textbook. Which type of energy transfer is occurring at each lettered area? help pls?

Answer:

A conduction

B heat

C convection

URGENT!!!! how do you balance this equation?

!! HELP WORTH 15 POINTS !!
How is the form of energy being changed when a student uses an electric sharpener to sharpen a pencil?

from mechanical to electrical

from electrical to mechanical

from thermal to mechanical

from magnetic to electrical

If you are leading a team to clean an oil spill in rough waters, which of the following methods would be most effective to clean the oil?

Install booms made from, or with, sorbent materials around the oil spill.

Install hard booms around the oil spill.

Coat the surface of the water with a sorbent material.

Wait until the water calms down and then install booms to contain the spill.

Candice did an experiment where wondered if temperature affects how cheese molds. She put a piece of cheese next to a different heat lamp and then measured how much mold was on each cheese. What is the DEPENDENT variable?

write a short story using the characteristics of the subatomic particles and their locations in the atom. For example, you need a positive character, a neutral character, and a negative character. You need two different locations. One to be the center location of the story and the other to be outside the center. At a minimum you should have at least 1 paragraph with about 5 sentences. Make sure that you use complete sentences.
Make sure it is school appropriate!!

WILL GIVE BRAINLIEST NO SPAM OR LINKS THEY WILL GET REPORTED
How can a force act directly on an object? Explain.

a) melissa planted more seeds than juan.

b) juan did not cover his seeds with soil.

c) the two students watered the seeds differently

d) melissa has a green thumb when it comes to growing plants

I NEED HELP ASAP!!!
The variable that is changed in an experiment to observe its effect is called?

This substance attaches to oxygen and carbon dioxide gas in the blood.

List 2 evidences for climate change.

This is 6th grade science. Amplify.

HELP ASAP ITS 8th GRADE SCIENCE BUT IT DOESN'T HAVE THAT OPTION

The graph shows the kinetic energy (KE) and potential energy (PE) of a bouncing ball over a period of 9 seconds. Use the graph to answer question 2-3.

2. When does the ball have the most kinetic energy?


3. What statement best describes what happens to the total mechanical energy of the ball as it bounces?



please and thank you <333

How did this piece of evidence change your thinking about the channel on Mars? Explain your ideas below.

What type of electromagnetic energy does a light use?

Make a model that explains how the iron pipes and fertilizer changed into rust.

In the Before space, draw the iron pipes and fertilizer before they changed into rust.
In the After space, draw the rust.
In the During the change space, draw or describe how the iron pipes and fertilizer changed into rust.
Label your model or create a key.

What are all the breeds of dogs and how many breeds of dogs are there?

What about a fructose? What does fructose do yo your body?​

For example," "however," and "also" are examples of:

conjunctions

introductory words

nouns

adjective

I need help quickly, this assignment is due in a few hours. I have a few 8th grade science questions I need help with. These is not need to explain your answer, just tell me if the answer is a,b, or c. Also, please answer all of the questions listed not just some of them. I will be giving 20 points if you answer, and brainly to the first person to answer. The questions look really complicated but it is mainly just a long description. The questions themselves seem simple.

QUESTION ONE : Miranda was learning to bake bread at home. Her first few batches of dough did not rise, or expand, as much as they should have. Miranda's mother noted that the kitchen was cold and suggested that the dough might not be warm enough to rise. Miranda decided to test her mother's suggestion. She made a large batch of dough and divided it into six equal-sized balls. Then, she put each ball into a bowl. She left three bowls on the counter in the kitchen, where the temperature was 63oF. She left the other three bowls on her desk in her upstairs bedroom, where the temperature was 80F. After one hour, Miranda measured the size of each dough ball.

Which of the following was the dependent variable in the experiment?
a. the temperature where the dough was left to rise
b. the ingredients used to make the dough
c. the size of each dough ball

QUESTION TWO: Jada liked to make guacamole, but she could often find only unripe avocados at the grocery store. In biology class, Jada learned that ripe fruits produce a gas called ethylene that can cause other fruits to ripen. Jada wondered whether storing ripe bananas with unripe avocados would make the avocados ripen faster. Jada prepared four paper bags with five unripe avocados in each bag. She added on ripe banana to two of the bags. Then, Jada sealed all four bags. After three days, she opened each bag and counted the number of ripe avocados in each bag.

Which of the following was the independent variable in this experiment?
a. the type of paper bag used
b. the number of bags with a ripe banana
c. the number of ripe avocados

QUESTION THREE: Colette was using steel to make rusted sculptures. After building each sculpture, she caused the steel in the sculpture to rust by placing it into tub filled with salt water for eight hours. Colette wondered if steel would rust faster submerged in vinegar instead of salt water. To find out, Colette cut ten squares of steel sheet metal and split them into two equal groups. She put one group of squares into a tub filled with salt water and the other group of squares into a tub filled with vinegar. Once an hour for eight hours, Colette counted the number of rusted steel squares in each group.

Which of the following was a variable that was held constant (control variable) in this experiment?
a. the type of liquid used
b. the size of the squares of steel sheet metal
c. the number of rusted steel squares

QUESTION FOUR: David divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, David opened the bags and counted the number of brown spots on each banana. He compared the average number of brown spots on bananas from bags with holes to the average number of brown spots on bananas from bags without holes.

Identify the question that David's experiment can best answer.
a. Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?
b. Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?
c. Do bananas develop more brown spots when they are kept in brown paper bags compared to in a plastic bag?

QUESTION FIVE: Ten groups of chemistry students combined three solutions that, when mixed, chemically reacted and turned blue. Before mixing, five groups of students heated the solutions to 25C, and five other groups heated the solutions to 50C. The students recorded how many seconds it took for the mixtures to turn blue. Then, the groups shared their results, and the class compared the time it took for the mixtures to turn blue at 25C and at 50C.

Identify the question that the students' experiment can best answer.
a. Does the type of color the mixture produces depend on the temperature of the solutions?
b. Does the mixture of solutions release more gas when they are mixed at 25C compared to 50C?
c. Does the mixture's color change faster when the solutions are mixed at 25C or 50C?

Calculate the work done by a 3.4 N force pushing a 400 g sandwich across a table 0.75 m wide in 4 seconds.

PEASE HELP!! I NEED THIS DUE BY THIS FRIDAY!!!!
Write a scientific argument that addresses the question: Which suspect is most likely to have made the hydrofluoric acid? First, state your claim. Then, use evidence to support your claim. For each piece of evidence you use, explain how the evidence supports your claim. As you write, refer back to your completed Modeling Tool sheets and Science Seminar Evidence Cards.

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Match each letter with the correct label. Use the atom diagram below.

Electron - Nucleus - Proton - Neutron

An oval shape, which may be elongated or nearly circular; the shape of the planet’s orbits.

In class we made salt crystals. To do this we put a supersaturated solution of salt into a glass of water. After a few days the water evaporated and the salt crystals were left on the paper cutouts. When the salt dissolved in the water was this a physical change or a chemical reaction? Please explain your answer in detail.

Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"

Which best describes why a scientist would ask a different question than this one?

O The question asks about subjective personal preferences regarding energy.
O The question focuses on the objective measurements of amounts of energy.
O The question has too wide of a focus, as though all situations can be studied at once.
O The question is focused on the future and finding new answers about changing needs.

Name and Title:

Include your name, instructor's name, date, and name of lab.


Objectives(s):

In your own words, what is the purpose of this lab?


Hypothesis:

In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.


Procedure:

The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.


Data:

Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.

Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One












Moon Two












Planet One












Planet Two













Conclusion:

Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth? Explain why. (Hint: Think about the carbon cycle.)
We know that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the make-up of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?

HELP! 100 POINTS! A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?

PLSSSSSSSS HELP MEEEEEEEEEEEEEE

How would you measure 20 grams of salt? Describe how you did this.


(this is due by tmr so someone please help!)

Use the drop-down menus to complete the sentences.

The ___
supports and protects a plant cell. It gives the cell its rigid structure.

Turgor pressure helps the plant stand upright. It is caused by the movement of ___
into a plant cell.

Plants are composed of cells that contain nuclei, which make them ___
.

Plants make their own food using sunlight, which makes them ____
.