Our sun is a star. It is made of gases called hydrogen and helium. It is always burning, and it is very hot! The outside of the sun is 11,000 degrees Fahrenheit. A really hot day on Earth is only 100 degrees Fahrenheit, so the outside of the sun is about 100 times as hot as the hottest day on Earth!
The sun spins around without moving out of its spot. Scientists pretend that planets and stars have a line drawn through their middles. This line is called an axis. Our sun spins on its axis, just as all of the planets spin on theirs. An axis is not a real line. It is imaginary, and it helps us understand how each planet and star spins.
The sun is very, very big. More than one million planet Earths could fit inside of the sun! Our planet, Earth, seems very big to us, but the sun is so much bigger! The sun is called a yellow dwarf star. As you know, dwarf means small! Our sun is not the biggest star. It is only a medium-sized star!
Our sun is very important to us. It gives us light and heat. Without light and heat nothing on Earth would be able to live.
Directions: Use the text about the sun to answer the questions below:
1. Our sun is_________________.
A. a planet
B. a star
C. a comet
2. List two gases the sun is made of on the line below:
3. The sun is about ____________ times as hot as the hottest Earth day.
4. Explain what an axis is:
5. How big is our sun compared to other stars?
6. What are two important things that the sun gives us?