Front

What happens to the moon's orbit if there is no gravitational force between Earth and the moon?

Back

The moon would continue to travel in a straight line at a constant speed, leaving its orbit.

Front

How are asteroids, comets, and meteors related?

Back

Meteors are small fragments that break from the icy bodies of asteroids, or the rocky bodies of comets orbiting the sun and enter Earth’s atmosphere.

Front

At which point does a moon in an elliptical orbit move fastest?

Back

At point A, when it is closest to the orbited body.

Front

Which statement is NOT true about the sun?

Back

The sun has a solid core similar to Earth’s.

Front

What best describes the physical properties of comets?

Back

Objects made of dust and ice orbiting far from the sun that emit gas and form a tail as they move closer to the sun.

Front

What is the gravitational force?

Back

A force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between them.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What are solar flares?

Back

Sudden eruptions of energy on the sun's surface that can affect space weather.

Front

What is the difference between a comet and an asteroid?

Back

Comets are made of ice and dust, while asteroids are primarily rocky and metallic.

Front

What is the photosphere?

Back

The outer visible layer of the sun.