DO you Know it

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Across
  1. 2. in order from the sun Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  2. 7. The degree or intensity of heat present in a subject or object.
  3. 10. The process of using one or more of your senses to gather information.
  4. 12. Way A spiral galaxy containing our solar system.
Down
  1. 1. the tendency of an object to resist a change in motion.
  2. 3. How much space an object takes up.
  3. 4. Unit a unit of length, equal to the mean distance of the earth from the sun: Approximately 93 million miles
  4. 5. a model of the solar system in which the earth is at the center of revolving planets and stars
  5. 6. The measurement or extent of something end to end
  6. 8. Kilo, Hecto, Deca, BASE, Deci, Centi, Milli
  7. 9. Metric unit for length
  8. 11. Diameter the apparent diameter of a planet or other celestial object measured by the angle from where you are observing.