Non-Contact Forces Unit Test (8th grade assignment)
1. A - True
2. B - False
3. A - True
4. A - True
5. B - Objects with the same charge repel each other, and objects with opposite charges attract each other.
6. D - The objects in interaction A are farther apart than in interaction B.
7. D - All of the above
8. Decreases, Increases
9. D - Electromagnet Y
10. Magnet force is used - A directional compass, a door catch or latch on cabinet || Electric force is used - 2 socks stuck together coming out of the dryer, an air filter that traps dust and iron particles
11. B - Positively charged hair
12. C - Set C
13. B - Opposite poles of a magnet attract
14. B - The distance between the charged particles is decreased.
15. C - P,Q,R