Across
- 2. - The unit used to measure electrical resistance.
- 3. - A measure of the amount of matter in an object.
- 4. - The force that pulls objects toward the center of the Earth.
- 6. - The smallest unit of matter that retains the chemical properties of an element.
- 8. - A celestial body that orbits around a star and may be composed of rock, gas, or ice.
- 9. - A chemical element with the symbol "O" and atomic number 8.
- 10. - The measure of the amount of space an object occupies.
- 11. - A solid figure with a polygonal base and triangular faces that meet at a common vertex.
- 12. - A device used to measure the electrical current flowing through a circuit.
- 13. - The natural agent that stimulates sight and makes things visible.
- 14. - A type of energy that can be transferred through waves or particles.
Down
- 1. - The process by which plants release oxygen into the atmosphere.
- 5. - The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.
- 7. - The bouncing back of light waves from a surface.