Glossary Words

3. the only star in our solar system.
5. a huge object in space that gives off heat and light.
6. to move in a regular path around something.
11. a unit of measurement that is equal to the distance light travels in a year.
12. a scientist who studies stars, planets, and other objects in the universe.
13. the length of time it takes for Earth to orbit the sun once.

1. to make a picture in your mind using information from different sources.
2. the sun, the planets that orbit the sun, and other objects that orbit the sun.
4. observations or measurements recorded in an investigation.
7. a ball-shaped object.
8. the planet we live on.
9. the distance across a circle or sphere measured from one side , through the center, to the opposite side.
10. an illustration that shows how something works or what its parts are.