Across
- 6. The place where people get the source of electricity is called...
- 11. ... are rocks that contain materials such as metals.
- 12. This is the scientist who discovered gravity.
- 13. Cars can run on fuels like...
- 14. Gravity pulls objects towards the... of the earth.
- 15. When sun moves in the spacetime, the spacetime will curve. This is called the spacetime... It tells other space objects to move around the sun and it feels like gravity.
- 17. People get materials like coal and ore by...
- 19. The scientist who proved that objects with different masses will fall at the same time onto the ground.
- 20. This force keeps us pulled towards the earth.
- 22. An orbit is a regular, repeating ... that one object takes around another object.
- 23. The moon... around the earth.
- 24. The sun and moon sets in the ...
- 25. ... of the Moon is when its appearance change because of the sunlight.
Down
- 1. The materials that we can find in nature is called natural...
- 2. The shape of earth is... like the shape of a ball.
- 3. As the moon orbits the earth, lights from the sun .... on different parts of the moon, so its appearance will change.
- 4. We got .... for cooking by burning natural gas.
- 5. Every 27-28 days the ... orbits around the earth.
- 7. People extract natural gas and oil by .... into the ground.
- 8. Some natural resources can be found in ... on the earth's surface, underground or underwater.
- 9. oil, natural gas, and coal can be use to generate...
- 10. Oil and... are found in underground rocks from plants and animals remains.
- 16. Oil is used to make...
- 18. The sun and moon rises from the ...
- 21. The black pencil tip is made of ...