1. Two things with ________ attract each other with a force of gravity.

2. Two things with _mass_ attract each other with a force of gravity.

3. An object in motion will stay in motion with a constant speed and In the _______________ unless acted upon by an unbalanced force.

4. An object in motion will stay in motion with a constant speed and In the _same direction_ unless acted upon by an unbalanced force.

5. If the distance between the moon and the earth were to increase, the force of gravity would ___________.

6. If the distance between the moon and the earth were to increase, the force of gravity would _decrease_.

7. Describe the relationship between the distance from the Sun and a planet’s orbital speed.

8. Closer to sun = greater speed
Describe the relationship between the distance from the Sun and a planet’s orbital speed.
Closer to sun = greater speed

9. If Jupiter’s mass decreased, Io’s orbital speed would __________.

10. If Jupiter’s mass decreased, Io’s orbital speed would _decrease_.

11. What is the cause of tides?

12. Gravitational pull between earth and moon AND earth and Sun
What is the cause of tides?
Gravitational pull between earth and moon AND earth and Sun

13. The highest high tides are called __________ tides.

14. The highest high tides are called _spring__ tides.

15. the amount of matter something has
What is mass?
the amount of matter something has

16. Define inertia.

17. An object’s resistance to change in motion
Define inertia.
An object’s resistance to change in motion

18. What type of tide is this?

19. What type of tide is this?
Spring tide
What type of tide is this?

20. It is a 1st quarter moon. What type of tide will you experience during high tide?

21. It is a 1st quarter moon. What type of tide will you experience during high tide?
A neap tide

22. What is weight?

23. A measure of the force of gravity on an object’s mass
What is weight?
A measure of the force of gravity on an object’s mass

24. Why does the force of gravity between the Earth and the Moon seem to have a greater effect on the moon?

25. Moon has less inertia, so it accelerates more
Why does the force of gravity between the Earth and the Moon seem to have a greater effect on the moon?
Moon has less inertia, so it accelerates more

26. If you were to stand on the beach for 24 hours, how many times would you see the ocean rise and fall?

27. If you were to stand on the beach for 24 hours, how many times would you see the ocean rise and fall?
Rise 2 times, fall 2 times

28. Are the forces acting upon a rocket when launching balanced or unbalanced?

29. Are the forces acting upon a rocket when launching balanced or unbalanced?

30. According to Newton’s Law of Gravitation, what does the force of gravity between two objects depend on?

31. The objects’ masses & distance between them
According to Newton’s Law of Gravitation, what does the force of gravity between two objects depend on?
The objects’ masses & distance between them

32. A planet with a larger mass will have a moon with a ___________ orbital speed.

33. A planet with a larger mass will have a moon with a ___________ orbital speed.
greater

34. If the mass of Venus increased, its force of gravity between Venus and the sun would ____________.

35. If the mass of Venus increased, its force of gravity between Venus and the sun would __increase__.