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Earth, moon, sun 4.6
| Question | Answer |
|---|---|
| The sun is ___ times bigger than the earth | 109 |
| The earth is __ times bigger than the moon | 4 |
| The tilt of the earth on its axis causes the ________ | seasons |
| When the northern hemisphere is tilted AWAY from the sun, that part of the earth is experiencing ______ | winter |
| When the northern hemisphere is tilted TOWARD the sun, that part of the earth is experiencing ______ | summer |
| In 365 days, the earth makes a complete ________ of the sun | revolution |
| In 24 hours, the earth makes a complete ________ on its axis | rotation |
| The ______ of the moon are caused by the reflection of sunlight off the moon’s surface | phases |
| During which phase of the moon do you see a complete, white circle | full moon |
| During which phase of the moon is it not visible at all | new moon |
| During the first and last quarter phases of the moon, you see a _____ of the circle | half |
| The phases of the moon are responsible for the changes in the ____ | tides |
| ____ tides are associated with full moons and new moons | high |
| Highest tidal ranges are associated with full and new moons, which are when the Earth, moon and sun are ________ | aligned |
| ____ tides are associated with the first and last quarter of the moon phase | low |
| The lowest tides are associated with the first and last quarter, when the earth, sun, and moon are at _____ angles | right |
| The _____ is an average-sized yellow star, about 110 times the diameter of Earth | sun |
| The sun is approximately ____ billion years old | 4.6 |
| The moon is a _________ of the earth | satellite |
| Our moon is a small, rocky satellite, having about __ of the diameter of Earth and one-eightieth its mass | 1/4 |
| The moon has extremes of temperature, and no atmosphere or _____ to support life | water |
| Earth, unlike the other three inner planets, has large amounts of life-supporting water and an ______-rich atmosphere | oxygen |
| Earth’s protective __________ blocks out most of the sun’s damaging rays | atmosphere |