Unit G Exploring the Solar System

Gravity eventually disappears as two objects move further and further apart.

Which planet has a rocky surface?

Where does most of the energy for life and other phenomena at Earth's surface come from?

The Sun is about halfway through its 10-billion-year-long life cycle.

If a spacecraft travels away from Earth, what happens to the gravitational pull between the 2?

Which of the following is NOT orbiting another space object in the Solar System?

Which planet's year is about 30 times longer than Earth's year?

Which of the following holds us to Earth's surface?

As mass increases, gravitational force decreases.

Objects weigh more when gravitational pull is stronger.

The closer two objects are, the stronger the gravitational force between them.

Gravity is a force that pulls any two objects towards each other.

What is most CORRECT about the Solar System bulletin board in the back of the room?

Which of the following statements about the Sun is TRUE? The Sun is __________.

More than a million Suns could fit inside the Earth.

What is mostly INCORRECT about the Solar System bulletin board in the back of the room?

Why do astronauts in orbit feel weightless?

As distance increases, gravitational force decreases.

A rocket that takes off at a slow speed is likely to fall back to the Earth.

Which planet's year is less than half of Earth's year?

Today, scientists accept that the Earth is at the center of the Solar System.

The Moon has less gravitational force than Earth, so things weigh less on the Moon.