| A | B |
| gravity | The moon's ______causes the tides. |
| tides | the rise and fall of ocean water |
| sun | The moon's light comes from the ___. |
| summer | the season when the sun appears longest and highest in the sky |
| Little Dipper | Polaris is in a constellatiion called _________. |
| night | As the earth rotates, the side facing away from the sun has_______. |
| sun | Earth moves around the _______. |
| year | the length of time it takes for the earth to go around the sun |
| axis | Earth rotates on its __________. |
| day | Earth rotates on its axis once a _____. |
| planet | any large body that revolves around a star and does not have have a light of its own |
| rotate | to turn on an axis |
| orbit | the path that a planet or moon takes around another object |
| constellation | a group of stars that forms a pattern |
| revolve | to move in a circle or orbit around another object |
| solar system | made up of the sun and planets |
| phases | changes in the shape of the moon |
| crescent | the shape of the moon when it looks like a thin slice of a circle |
| month | length of time for the moon to rotate on its axis |
| winter | the season when the sun appears lowest and for the shortest time in the sky |
| sundial | tells time by tracking the sun's shadows |
| Polaris | the star that the Earth's axis points toward |
| North Star | another name for Polaris |
| west | the direction in which the sun appears to set |
| east | the direction in which the sun appears to rise |
| Earth | The moon revolves around the __________. |
| month | the amount of time it takes for the moon to revolve around the Earth |
| new moon | the moon phase when the moon is not visible |
| full moon | the moon phase when the full lighted side of the moon is visible |
| day | As the Earth rotates, the side facing the sun has _______. |
| December | the month with the shortest day |
| June | the month with the longest day |
| nine | How many planets are there? |