7.0 Planetary motion and Universal Gravitation

Chapter 7:

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Planetary motion and Universal Gravitation

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Learning Check Point 1

Kepler's Laws 😋

Multiple Choice

The distance from Earth to the Sun changes throughout the year

• Kepler's 1st Law

• Kepler's 2nd Law

• Kepler's 3rd Law

Multiple Choice

If you know the periods of Earth and Mars, as well as Earth's radius, then you can calculate the radius of Mars

• Kepler's 1st Law

• Kepler's 2nd Law

• Kepler's 3rd Law

Multiple Choice

Earth moves faster when it is closer to the Sun

• Kepler's 1st Law

• Kepler's 2nd Law

• Kepler's 3rd Law

Challanging questions

We are ready 😎

Multiple Choice

Where is the planet moving faster?

Hint: Kepler's 1st Law [The planets move faster when they are closer to the sun and slower when they are further away from the sun]

• Position A to B

• Position B to C

• Position H to I

• Position I to J

Multiple Choice

What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?

Hint: Kepler's 2nd Law

• The area between A, B and the Sun is the largest.

• The area between H, I and the Sun is the largest

• Both areas are equal in size

Multiple Choice

When a planet orbits the Sun, one of the foci of the elliptical orbit is

Hint: Kepler's 1st Law

• the axis

• the perihelion

• the center

• the Sun 🌞

Chapter 7: Section 2

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Planetary motion and Universal Gravitation

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Practice

Newton's Law of Universal Gravitation 😄

Open Ended

Based on your simulation, what can you say about the the distance and the force of gravity?

Bonus Point Round

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Multiple Choice

Find force of gravity if Satellite B has a mass [m₁ = 80 kg] at a distance from the Earth’s center [r = 8.0 × 10⁶ m]

Hint: Mass of Earth is: [m₂ = 5.97 × 10²⁴ kg]

Hint: G = 6.67 × 10^–11 N m² kg^–2

• 5 × 10² N

• 8 × 10² N

• 22 × 10² N

Learning Check Point 2

Newton's Laws of Universal Gravitation 😋

Multiple Choice

What states that "every object in the universe attracts every other object"?

• Law of Universal Gravitation

• Newton's First Law of Motion

• Kepler

• Inertia & gravity

Multiple Choice

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance

• mass and matter

• distance and weight

• weight and mass

Multiple Choice

Complete the following statement: The farther away two planets are the _______ the gravitational force between them

• greater

• same

• doesn't matter

• weight and mass

• smaller

Open Ended

Any questions?

Bye bye chapter 7

Hellooo chapter 12: [Last chapter for this YEAR] 😏