Across
- 2. A force between TWO objects. The magnitude (size) of the force depends on the mass of the objects and the distance between them
- 6. small piece of rock if it reaches Earth’s surface
- 8. The size and distance of one object relative to another.
- 10. Rocky bodies orbiting the sun, mostly between Mars and Jupiter
- 11. A very diffuse (spread out) collection or cloud, of gas and dust in outer space.
- 13. the tendency to not change in motion unless acted upon by an unbalanced force.
- 14. Friction forces caused by the particles of air pushing against the motion of objects moving through them.
- 17. The lack of any air (atmosphere) particles in a volume
- 18. Small piece of rock in the solar system
Down
- 1. A system of solar systems, stars, gas, dust, and other matter
- 3. The motion pathway determined by the forces of gravity of objects in space
- 4. The force from gravity (usually in pounds or newtons) which Earth exerts on another object.
- 5. The forces caused by one surface or object rubbing against another as they move past each other.
- 7. A change in the speed or direction of an object
- 9. Described with a clearly identified reference frame (or point) from which an object’s motion is being measured
- 12. direction the object would travel if inward acting forces are removed
- 15. small piece of rock if it enters Earth’s atmosphere
- 16. Small icy object orbiting the sun that may have a long “tail” or halo when closer to the sun