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The Cosmic Snowballs: Comets

Questions: 5

Grade: 4

Words: 114

Text

Text & Questions

Text, Questions & Answers

Imagine a big snowball flying through space. That's a comet for you! A comet is like a cosmic snowball made of ice, rock, and dust. When it comes close to the Sun, the ice starts to melt and leaves a glowing trail that we can see from Earth. A comet has a heart called the nucleus, a cloud around it called the coma, and two tails. Unlike a cat or a dog, this cosmic snowball has one tail of dust and another of gas! One of the most famous comets is Halley's Comet. It visits close to Earth every 75 years. People have been watching and recording it for thousands of years. Isn't that amazing?

Question 1

What is a comet made of?

Ice, rock, and dust

Explanation. A comet is like a cosmic snowball made of ice, rock, and dust.

Water and gas

Metal and rock

Dust and gas

Fire and smoke

Question 2

What happens when a comet comes close to the Sun?

Its ice starts to melt and leaves a glowing trail

Explanation. When a comet comes close to the Sun, the ice starts to melt and leaves a glowing trail that we can see from Earth.

It disappears

It becomes a star

It explodes

It turns into a meteor

Question 3

What is the nucleus in a comet?

It's the heart of the comet

Explanation. In a comet, the nucleus is referred to as its 'heart'.

It's the tail of the comet

It's the outer layer of the comet

It's the gas in the comet

It's the dust in the comet

Question 4

How often does Halley's Comet visit close to Earth?

Every 75 years

Explanation. Halley's Comet visits close to Earth every 75 years.

Every 50 years

Every 100 years

Every 200 years

Every 25 years

Question 5

Is it true or false that a comet has two tails?

True

Explanation. A comet has two tails: one of dust and another of gas.

False

It depends on the comet

All comets have three tails

Some comets have no tails

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