Chemistry, 23.11.2020 17:40 skywil8981

My science teacher gave me these questions can you answer them. Why is the sky blue?
1. Why does the moon appear in the daytime?
2. How much does the sky weigh?
3. How much does the Earth weigh?
4. How do airplanes stay in the air?
5. Why is water wet?
6. What makes a rainbow?
7. Why don't birds get electrocuted when they land on an electric wire?
8. Do aliens exist?
9. Where do birds go in the winter?
10. Why is the ocean blue?
11. Why is the sun the only star that can be seen during the daytime?
12. Blue sky over a green hillside.

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Answer from: annyarias3563

The sky is blue because the air scatters blue light from the Sun across the sky and down to our eyes.

1:( sorry l don't know) :-(

2: 14.7 lbs per square inch

3: 5.972 × 10^24 kg

4: (sorry l don't know):'(

5: Water is wet because when something is wet, it has water on it and on a molecular level, water molecules are bonded on top of each other, therefore water is wet.”

6: A rainbow is caused by sunlight and atmospheric conditions.

7: Because the electricity is always looking for a way to get to the ground.

8: No

9.:the Birds fly from north to south each winter, and then they head back north when the temperatures warm up.

10: The ocean is blue because water absorbs colors in the red part of the light spectrum.

11: In the daytime we see the sun shine. Our sun is a very bright star. The sun's bright light blocks out other stars. It blocks out stars that are not as bright.

Answer from: lailahussain99

When we see the moon during the day it's because the moon is in the right spot in the sky and it's reflecting enough light to be as bright.

14.7 lbs per square inch of earth surface which is roughly 11 billion billion pounds.

The earth is 5.972 × 10^24 kg

A rainbow is caused by sunlight and atmospheric conditions. Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors. When light exits the droplet, it makes a rainbow.

Do you think alien exist? It’s your opinion on that o

Birds fly from north to south each winter, and then they head back north when the temperatures warm up. In the winter, many birds can be found in southern cities, where food sources like nectar or insects are available.

The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.

In the daytime we see the sun shine. Our sun is a very bright star. The sun's bright light blocks out other stars.

Answer from: Quest

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

Answer from: Quest

The total number of electrons is 14

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My science teacher gave me these questions can you answer them. Why is the sky blue?
1. Why d...

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