hapter 10 Science Laboratory Free Fall Tower Score: 1. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following to change speed or direction. 2. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following In common speech, accelerate usually means to speed up. In reality, any change in speed (speeding up or slowing down) is considered. 3. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following the force of air pushing against a moving object. 4. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following Air resistance is also called. 5. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following Air resistance as speed increases. Page 1 of 9
6. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following Air resistance also increases as surface area (size). 7. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following falling motion caused by the force of gravity. 8. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following the force of attraction between all objects in the universe. 9. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following Earth s gravity causes objects to to Earth s surface. 10. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following Gravity is only significant when one of the objects is, like the Earth. There is very, very little gravitational attraction between you and your couch but there is some! Page 2 of 9
11. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following the constant speed that an object falling through air approaches 12. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following At terminal velocity the force of gravity pulling down is balanced by the force of air resistance. 13. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following a region that contains no matter. 14. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following is very nearly a vacuum. 15. lick on Lesson Info then lick to open Vocabulary Sheet to answer the following The has no atmosphere, so the area above the Moon s surface is also nearly a vacuum. Page 3 of 9
16. A. Please set up Free Fall Tower 17. A. Please set up Free Fall Tower 18. A. Please set up Free Fall Tower Page 4 of 9
19. A. Please set up Free Fall Tower 20. A. Please set up Free Fall Tower 21. A. Please set up Free Fall Tower Page 5 of 9
22. A. Please set up Free Fall Tower 23. A. Please set up Free Fall Tower 24. A. Please set up Free Fall Tower Page 6 of 9
25. A. Please set up Free Fall Tower 26. A. Please set up Free Fall Tower 27. A. Please set up Free Fall Tower Page 7 of 9
28. A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on Earth. What happens? A The bowling ball hits the ground first. The bag of potato chips hits the ground first. oth objects hit the ground at the same time. The objects don't move at all. They just stay where they were released. 29. A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the Moon. There is no air on the Moon. What happens? A The bowling ball hits the ground first. The bag of potato chips hit the ground first. oth objects will hit the ground at the same time. oth objects won't move at all. They will just stay where they were released. 30. A 46-gram golf ball and a 400-gram soccer ball were released at the same time from the top of a tall tower. What is the best explanation of this picture? A Heavier objects always fall faster than lighter objects Lighter objects always fall faster than heavier objects. The soccer ball was affected by air resistance less than the golf ball. The soccer ball was affected by air resistance more than the golf ball. 31. On Earth, a ping pong ball was dropped from two different heights. The speed of the ball when it hit the ground was recorded each time. What will the speed be when it is dropped from 40 meters high? A a little less than 8 meters per second exactly 8 meters per second a little more than 8 meters per second exactly 16 meters per second 32. The graph below describes a falling object. What probably happened? Page 8 of 9
A At 2 seconds the atmosphere was changed from air to a vacuum. At 2 seconds a parachute opened. At 2 seconds the object hit the ground and stopped. At 2 seconds the object stopped going up and started going down. Page 9 of 9