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Solar System
Question | Answer |
---|---|
1. How does gravity affect the Moon and its relationship with Earth? | Earth's gravity keeps the moon in orbit around the Earth. |
2. Which force keeps satellites in orbit? | gravity |
3. What causes an object to fall to the Earth when dropped? | Gravity |
4. What time of day, and time of year, will your shadow be the shortest? | noon time in the summer |
5. Compared to the shadow cast by an object in the early morning, its shadow at noontime would be _____________. | shorter and fatter |
6. Look at two pictures with shadows and be able to identify a shadow at noon time. | |
7. Why does the Sun appear to rise and set each day? | Earth rotates |
8. What is Earth's orbit? | It is an ellipse, and Earth is closer to the Sun when the northern hemisphere has winter. |
9. How many days does it take for the Moon to make one revolution around Earth? | 28 days |
10. Approximately how long does it take for Earth to make one revolution around the Sun? | one year |
11. Why are different constellations seen in the night sky during different times of the year? | The Earth revolves around the sun |
12. Why do the stars seem to move from east to west in the night sky? | Earth rotates on its axis |
13. The Earth takes 365.25 days to orbit around the Sun. This results in an __________________________________. | an extra day is added to the month of February every four years. |
14. Why do stars appear to move in the night sky? The star's apparent movement is ___________________________. | a result of Earth's movement. |
15. A constellation is a group of stars visible in one area of the sky that ________________________________. | form a path |
16. What causes the phases of the Moon? | The Earth's shadow on the moon |
17. Why do we always see the same side of the moon from the Earth? | The moon's rotation and orbit occur at the same rate. |