Vocabulary
What is mass?
The amount of matter in an object
Identify the two factors that affect the strength of gravity.
mass and distance
Identify one factor that keeps Earth in orbit around the sun.
A. inertia B. weight C. mass D. distance between the objects
What is velocity?
A. speed and time B. distance and time C. speed and direction D. mass of the objects and the distances between the objects
C. speed and direction
the relationship between mass and gravity is...
(write or draw)
directly proportional
Identify a factor for orbital motion.
A. weight B. distance between the objects C. mass D. gravity
What is inertia?
A. The tendency of an object to resist change in motion. B The tendency of an object to constantly change motion. C. The tendency of an object to orbit another object. D. Speed and direction
A. The tendency of an object to resist change in motion.
Which object has the greatest gravity?
A. 100 g B. 100.2 g C. 10 g D. 10.2 g
B 100.2 g
If an object is further from its central body, it will...
orbit slower
What is gravity? What does it depend on?
The attractive force between two objects; the strength depends on distance between the objects and their masses
Which objects have the least gravity?
A. Objects 40 m apart B. Objects 50 m apart C. Objects 10 m apart D. Objects 12 m apart
objects 50 m apart
If a planet suddenly doubled in size, its orbit...
would not change
What is weight?
A. The force of gravity on an object
Which has the greatest gravitational pull?
A. objects with a total mass of 50g and 100 m apart B. objects with a total mass of 10 g and 100 m apart C. objects with a total mass of 25 g and 50 m apart D. objects with a total mass of 50 g and 50 m apart
D. objects with a total mass of 50 g and 50 m apart
Identify the correct explanation for what would happen to Earth if the sun burns out.
A. Earth would keep going in the same orbit bc of inertia. B. Earth would start orbiting Jupiter b/c it is the next largest body in the universe. C. Earth would fly off in a straight line b/c of inertia, until it is pulled by the gravitational force of the next star it encounters. D. Earth would fly off in straight line b/c of inertia and never orbit anything else ever again.
most likely C