Gravity in Earth's Solar System

Which force is primarily responsible for keeping the planets in orbit around the Sun?

• Electromagnetic force

• Gravitational force

• Nuclear force

• Frictional force

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TEKS.SCI.7.9B

DOK Level 1: Recall

What is the main effect of the Sun's gravity on the planets in the solar system?

• It causes them to spin on their axes.

• It keeps them in their orbits around the Sun.

• It makes them move away from the Sun.

• It has no effect on the planets.

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TEKS.SCI.7.9B

DOK Level 1: Recall

How does gravity affect the motion of satellites orbiting Earth?

• It pulls them away from Earth.

• It keeps them in a stable orbit around Earth.

• It has no effect on satellites.

• It causes them to crash into Earth.

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TEKS.SCI.7.9B

DOK Level 1: Recall

Which of the following best explains why tides occur on Earth?

• The rotation of Earth on its axis.

• The gravitational pull of the Moon and the Sun.

• The wind patterns on Earth's surface.

• The Earth's magnetic field.

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TEKS.SCI.7.9B

DOK Level 1: Recall

Explain how the gravitational force between two objects changes as the distance between them increases.

• The gravitational force increases.

• The gravitational force decreases.

• The gravitational force remains the same.

• The gravitational force fluctuates.

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TEKS.SCI.7.9B

DOK Level 2: Skill/Concept

Describe the role of gravity in the formation of tides on Earth.

• Gravity from the Sun only causes tides.

• Gravity from the Moon only causes tides.

• Gravity from both the Moon and the Sun causes tides.

• Gravity has no role in the formation of tides.

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TEKS.SCI.7.9B

DOK Level 2: Skill/Concept

How does the gravitational force of the Sun influence the orbital motion of planets in the solar system?

• It causes planets to move in a straight line.

• It keeps planets in elliptical orbits around the Sun.

• It makes planets move randomly.

• It has no influence on the orbital motion of planets.

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TEKS.SCI.7.9B

DOK Level 2: Skill/Concept

What would happen to a satellite if Earth's gravity suddenly disappeared?

• It would continue to orbit Earth.

• It would move in a straight line away from Earth.

• It would fall to the ground.

• It would stay in the same position.

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TEKS.SCI.7.9B

DOK Level 2: Skill/Concept