Unit 1
1. What pulls a basketball down through a hoop?
7. How many different molecules make up salt water?
More than one type of molecule
12. If a sheet of paper weighed 5 grams then a student ripped the paper into 200 pieces, how much does the paper weight now?
5 grams
6. Why can you not see stars during the daytime?
The sun is too bright.
2. If someone drops a marble and a feather from the same place and watches them fall to the ground, what are they trying to prove?
That gravity exists
8. Filling a balloon with air and then letting it out is an example of what?
Gas is matter
15.1. Most of Earth’s water is in the ________.
Ocean.
15.2. Most of Earth’s Freshwater is found in the ___________ and _______________.
Glaciers and groundwater.
3. Why does the Sun look so much bigger and brighter than the other stars?
It is the closest star to Earth.
9. When talking about color, taste, type, texture of a substance, what are you describing?
Properties of a substance
14. Weighing a piece of clay and then changing the shape of it and weighing it again, what is that an example of?
Matter is not created or destroyed
17. Why might someone place food scraps from a café to a garden?
To help the decomposer
4. Why can someone not see Orion in the night sky during June?
Orion is a summer constellation.
10. How can you tell a new substance has formed?
It has new properties
11. What happens to the amount of water when it changes from a liquid to a solid (Freezes)?
The amount stays the same.
18. What is at the beginning of every food chain and food web?
5. What causes day and night?
The Earth must rotate on its axis.
16. What is a criteria for someone who wants to design a container that can catch dirt and debris before it gets to a river?
It must collect a large amount of debris before it gets to the water.
13. A hurricane is coming in one week and we have $500 for supplies to create a project to stop beach erosion. What is the problem for the project?
They need to design a solution to beach erosion with only $500 and do it in one week.
19. Where would a polar bear get their energy?
Ocean plants then the fish.