The Solar System

Front

What are comets?

Back

Objects made of dust and ice that orbit far from the sun and emit gas, forming a tail as they approach the sun.

Front

What is the order of the first four planets in the Solar System, starting from the closest to the sun?

Back

Mercury, Venus, Earth, Mars.

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 does the gravitational force of attraction between two objects change if their masses increase?

Back

The gravitational force of attraction increases.

Front

How does the gravitational force of attraction between two objects change if the distance between them increases?

Back

The gravitational force of attraction decreases.

Front

What is the outer visible layer of the sun called?

Back

The photosphere.

Front

What are some visible features of the sun?

Back

Solar prominences, solar flares, and sunspots.

Front

Does the sun orbit the center of the Milky Way?

Back

Yes, the sun orbits the center of the Milky Way.

Front

Does the sun have a solid core similar to Earth’s?

Back

No, the sun does not have a solid core like Earth.

Front

What is the main component of the sun?

Back

Hydrogen, which makes up about 74% of its mass.