Passage:

The sun is a star that is located at the center of our solar system. It is a huge ball of hot, glowing gases. The sun is so big that about one million Earths could fit inside it! It provides light and heat to all the planets in our solar system, including Earth.

The sun is made up of different layers. The outermost layer is called the corona, which is the part that we see during a solar eclipse. Below the corona is the chromosphere, which is a layer of hot gases. The next layer is the photosphere, which is the visible surface of the sun. The photosphere is covered in dark spots called sunspots. These sunspots are cooler than the rest of the photosphere and appear darker.

The sun is constantly releasing energy in the form of light and heat. This energy is produced through a process called nuclear fusion. In nuclear fusion, hydrogen atoms combine to form helium, releasing a large amount of energy in the process. This energy is what makes the sun shine.

The sun is very important for life on Earth. It provides light for plants to make food through a process called photosynthesis. It also provides heat, which helps to regulate the Earth’s temperature. Without the sun, life on Earth would not be possible.

Sample Questions:

1. What is the sun? a) A planet b) A star c) A moon d) A comet

2. How many Earths could fit inside the sun? a) One thousand b) One million c) One billion d) One trillion

3. Which layer of the sun is the visible surface? a) Corona b) Chromosphere c) Photosphere d) Sunspots

4. What are sunspots? a) Dark spots on the sun’s surface b) Bright spots on the sun’s surface c) Layers of hot gases d) Cool gases surrounding the sun

5. How does the sun produce energy? a) Through a process called nuclear fusion b) Through a process called photosynthesis c) Through a process called nuclear fission d) Through a process called combustion

6. Why is the sun important for life on Earth? a) It provides light for photosynthesis b) It provides heat to regulate temperature c) It provides both light and heat d) It is not important for life on Earth

7. Which process occurs when hydrogen atoms combine to form helium in the sun? a) Nuclear fusion b) Nuclear fission c) Photosynthesis d) Combustion