Science
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ACROSS
6. The amount of space occupied by an object.
8. A measure of the gravitational force between two objects.
10. The amount of matter in an object.
11. ____ notation - a number is expressed as a value between 1 and 10 multiplied by a power of 10.
13. The standard SI unit to measure length.
15. The rigid outer shell of the planet and including the crust and the solid, uppermost part of the mantle.
16. The study of the materials that make up Earth and the processes that form and change these materials.
18. An explanation based on many observations during repeated experiments.
19. Used in an experiment to show that the results of an experiment are actually a result of the condition being tested.
20. The water in Earth’s oceans, seas, lakes, rivers, glaciers, and atmosphere.
21. ____ variable - a factor that can change if the independent variable is changed.
22. ____ variable - the factor that is manipulated by the experimenter.
 DOWN
1. The study of the part of the Earth’s surface which cover nearly three-fourths of the planet.
2. Can be thought of as a “rule of nature.”
3. All organisms on Earth as well as the environments in which they live.
4. Parts of an experiment that can be changed or change as a result of the experimentation.
5. Most scientific studies and experiments use this standard system of units (Le Système International d’Unités)
7. The blanket of gases that surrounds our planet.
9. This application of scientific discoveries produces things which enhance our life.
12. The study of objects beyond Earth’s atmosphere.
13. The branch of Earth science that studies the air that surrounds our planet.
14. The region of Earth’s upper mantle that is partially molten and flows like a soft plastic.
17. A suggested explanation for an observation, often stated in the form of a question that can be answered by the results of a test or an experiment.