Across
- 1. A simple machine that helps lift heavy objects.
- 3. A large object like Earth that orbits a star.
- 4. The main source of energy for Earth.
- 5. When two or more things are mixed together, like salt and pepper.
- 6. A gas that plants need to grow.
Down
- 2. The spinning motion of Earth that causes day and night.
- 4. Water in its gaseous state
- 7. The part of a plant that takes in water from the soil.