| A | B |
|---|
| The Earth spinning on its axis | rotation |
| This occurs every 24 hours | The Earth rotates on its axis |
| The distance of the equator is measured in ___ | latitude |
| The moon orbits Earth in a(n) ____ shape | oval |
| Spring tides occur | when the Earth moon and sun line up |
| Rockets move forward in reaction to | expelling hot gases throught the nozzle at the rear |
| The pull of gravity on the surface of the moon is | on sixth that of Earth |
| Maria are | regions once flooded by molten material |
| The darkest part of the moon's shadow is | umbra |
| Humans first landed on the moon | 1969 |
| The sun is directly overhead on two days | solstices |
| If you stand in the ____ you will see only a partial eclipse | Penumbra |
| Satellites with ___ orbits appear to hover over one place on the Earth's surface | geosynchronous |
| An eclipse of the moon appears only in the ___ phase | full |
| Each of the two days of the year when the Earth is not quite tilted toward the sun | equinox |
| In one year the Earth completes 365 | rotations |
| The day in March which the sun is directly over the equator is called | vernal equinox |
| A _____ occurs during a full moon when Earth is directly between the moon and sun | lunar eclipse |
| When the moon is in Earth's ___ you see a total lunar eclipse | umbra |
| The first person to orbit the Earth | Yuri Gagarin |
| Who walked on the moon | Neil Armstrong |
