The sun, planets, and moons are all part of our solar system. The sun is a huge star in the middle of the solar system. It is the only star we can see during the day. The sun is (1) ….............. brighter than the stars we see at night, because it is much closer to the (2) ………......... It is made of gases that are released in the form of light and heat. The planets are all different sizes. Mercury is the smallest planet. Jupiter is the largest planet. It is eleven times (3) ………......... than the Earth! All eight of the planets are much smaller than the sun. All of the planets in our solar system move around the sun in an oval (4) ………......... called an orbit. It is shaped something like an egg. The sun has a strong force that pulls all of the planets toward it. This force, called gravity, is what makes the planets (5) ………......... in their orbits. As each planet orbits the sun, it is also spinning around like a top. This spinning is called rotation. Each planet rotates at a different speed. It takes Jupiter less than 10 hours to rotate one time, but it takes Venus 243 days! Choose the best answer. 1. A. very B. much C. so D. too 2. A. Moon B. star C. orbit D. Earth 3. A. wider B. thicker C. longer D. deep 4. A. road B. route C. path D. way 5. A. lie B. live C. stand D. stay Answer the questions below. 1. Which star can we see during the day? .......................................................................................................................................... 2. Why the sun is so bright? .......................................................................................................................................... 3. What does the orbit look like? .......................................................................................................................................... 4. What is the strong force of the sun called? .......................................................................................................................................... 5. Which one finishes its rotation faster, Jupiter or Venus?