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Vocabulary
Gravity
Orbit
100
What is mass?
A. The amount of matter in an object B. The amount of energy in an object C. The amount of gravity pulling on an object D. The amount of space an object takes up in an area
100
Identify one of the factors that affect the strength of gravity.
A. inertia of the object B. volume of the object C. mass of the object D. weight of the object
100
Identify one factor that keeps Earth in orbit around the sun.
A. inertia B. weight C. mass D. distance between the objects
200
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
200
Identify a factor that affects gravity.
A. the distance between the objects B. weight of the objects C. inertia of the objects D. volume of the objects
200
Identify a factor for orbital motion.
A. weight B. distance between the objects C. mass D. gravity
300
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
300
Which object has the greatest gravity?
A. 100 g B. 100.2 g C. 10 g D. 10.2 g
300
Identify the correct explanation
A. The moon gets closer to Earth b/c a meteor hit Earth causing a smaller mass, so Earth has a stronger gravitational pull. B. The moon gets farther from Earth b/c a meteor hit Earth causing a smaller mass, so Earth has a stronger gravitational pull. C. The moon gets closer to Earth b/c a meteor hit Earth causing a smaller mass, so Earth has a weaker gravitational pull. D. The moon gets farther from Earth b/c a meteor hit Earth causing a smaller mass, so Earth has a weaker gravitational pull.
400
What is gravity?
A. The repelling force between two objects; the strength depends on distance between the objects and their masses B. The force that causes objects to push against each other. C. The attractive force to repel against another object. D. The attractive force between two objects; the strength depends on distance between the objects and their masses
400
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
400
Identify the correct explanation for the Earth's orbit around the sun.
A. Earth has inertia to keep moving in a straight line, but it's own gravity forces it toward the sun. B. Earth has inertia to keep moving in a straight line, but the sun's gravity keeps pulling Earth toward it. C. Earth has no inertia; the sun's gravity just keeps pulling on it, but Jupiter is the second largest planet, so it keeps pulling Earth toward it. D. The sun has inertia and Earth's gravity pulls the sun in orbit around the Earth.
500
What is weight?
A. The force of gravity on an object B. The force of inertia on an object C. The force of velocity on an object D. The force of mass on an object
500
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
500
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.