Across
- 5. System of measurement used everywhere outside the US
- 6. A change a species has made over time in response to the environment around them
- 7. The change in distance over a change in time
- 9. Closest star to Earth
- 10. An interaction between objects that changes the objects motion
- 11. 6th planet from the Sun
- 12. To change over time
Down
- 1. Group of solar systems, dust, and gas held together by gravity
- 2. These 4 times of year are caused by the tilt of the Earth on its axis
- 3. Force that is dependent upon the masses and distance between 2 objects
- 4. A diagram showing the physical relationships between past and present organisms
- 5. There are 8 phases of it in the night sky
- 8. Event where one astronomical body passes between 2 other bodies
- 10. Evidence that an organism once existed in an area