CHEMISTRY MIDDLE SCHOOL

Which of these was most important in forming the solar system A-darkness
B-evaporation
C-cooling
D-gravity

Answers

Answer 1
Answer: D. Gravity because the solar system wouldn’t stay together without the gravity pulling the planets together.

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What property must a solid have to be considered a crystalline solid

Answers

The atoms of the solid have to form a crystalline structure, which means that they have an ordered configuration that is the same throughout the entire solid.

1. The Moon completes one orbit around the Earth in approximately _______ and completes one cycle of its phases in approximately _______.






27 1/3 days, 24 hours





27 1/3 days, 29 1/2 days





365 1/4 days, 29 1/2 days





24 hours, 29 1/2 days


thank you for your time

Answers

The Moon completes one orbit around the Earth in approximately 27 1/3 days and completes one cycle of its phases in approximately 29 1/2 days. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that has come to your great help.

(Science and 15 points) Which of the following processes produces food?A. Excretion
B. Photosynthesis
C. Reproduction
D. Respiration

Answers

The answer is B. Photosynthesis

The answer to you question is B (photosynthesis) because it transfers light into food.

QUICKEST GET BRAINLIEST AND 8 POINTS Which atomic model describes the atom as a nucleus surrounded by electrons that may travel as waves in the electron cloud?
Dalton's model
Thomson's model
Rutherford's model
Current model

Answers

Hello there.

Which atomic model describes the atom as a nucleus surrounded by electrons that may travel as waves in the electron cloud?


Rutherford's model.

Answer:

Which atomic model describes the atom as a nucleus surrounded by electrons that may travel as waves in the electron cloud?

Explanation:

hope this helps

Which of the following is not an option for solving the world water crisis? a. desalination b. finding new sources of freshwater c. reducing overconsumption d. wastewater treatment plants Please select the best answer from the choices provided A B C D

Answers

Answer:

Option(b)

Finding new sources of fresh water is not the correct method For solving the world water crisis the solution

Explanation:

Very small amount of water available on earth is freshwater and can be used by humans for drinking and other basicnecessities. Finding a new source for fresh water is a difficult also there is an no source  found yet according to physical geography of the earth

Water consumption is need of the hour as the population of 7 billion can not survive without it and reducing over consumption can help savehugeamounts of water.

Answer:

The correct answer is option b. finding new sources of water

Explanation:

The other options are more proactive ways of alleviating the crisis, while finding new sources of freshwater is hardly an option. That would likely involve melting the glaciers to extract the Earth's largest fresh water reserves, which would subsequently destroy polar ecosystems and alter the thermohaline circulation of water across the globe, which relies heavily on the Earth's polar regions and has a large effect on the planet's climate.

What are the words that describe how matter changes state

Answers

"Phase" describes a physical state of matter. The key word to notice is physical. Things only move from one phase to another by physical means. If energy is added (like increasing the temperature) or if energy is taken away (like freezing something), you have created a physical change. 
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