9.4Quiz Review

MC

100

Question 1 

Gravity

200

Question 2

It wants to move in a straight line due to inertia

300

Question 3

Answer choice C 

• The Sun’s gravity pulls the planet inward.

• The planet’s inertia (its forward motion) keeps it moving straight.

• These two forces balance, so instead of crashing into the Sun or flying off into space, the planet follows a curved orbital path around the Sun.

👉 In short: Gravity pulls, inertia pushes forward → orbit happens.

400

Question 4 

Inertia and gravity as balanced forces

500

Question 5

Begin to orbit closer and closer to the planet

WR

100

Question 1

Correct answer will include the following: mention of gravity, gravity’s pull on the earth towards the sun, mostly circular orbital path

200

Question 2 

 Correct answer will include the following: force of attraction between two or more masses

300

Question 3

Give an example in which the force of gravity between one pair of objects is greater than the force of gravity between another pair of objects. Your answer should include four masses and two distances (one distance between each pair of masses). Label the pair of masses that would have the greater gravitational attraction. How does this relate to planets in our solar system

400

Question 4

Correct answer will include four masses, two distances, and correct labeling of the pair of masses with the greater gravitational attraction. Comparison should be made about the force of gravity in relation to a planet’s distance from the Sun

500

Question 5

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