Across
- 3. the outermost layer of the earth
- 5. day the time it takes for Earth to rotate on its axis so that the sun appears in the same position in the sky.
- 6. a geographic coordinate that measures how far east or west a point is on Earth.
- 9. a thick layer of hot, dense rock that sits between the Earth's crust and core.
Down
- 1. a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles.
- 2. the point in the orbit of a planet when it is closest to the sun.
- 4. the slow movement of the axis of a spinning body around another axis due to a torque acting to change the direction of the first axis.
- 7. core the solid, innermost layer of Earth, made up of mostly iron and nickel.
- 8. equinox the day when the sun is directly above the equator, making day and night equal in length.