WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

What two factors balance each other to keep planets in stable, near-circular orbits around the Sun?

The gravitational pull of the Sun and the planet's forward inertia (velocity) Solar wind pressure and ocean tides Atmospheric friction and magnetic repelling forces The Moon's gravity and Earth's rotation speed

Correct Answer:

The gravitational pull of the Sun and the planet's forward inertia (velocity)

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