| A | B |
| You never see the far side of the moon from Earth. | Because the moon rotates once for each revolution around Earth, what occurs? |
| reflected sunlight | Why does the moon shine? |
| phases | the different shapes of the moon that are seen from Earth |
| one month | How long does it take the moon to go through all of its phases or revolve around Earth once? |
| changes in the positions of the sun, moon, & Earth | What causes phases? |
| new moon | When the sun lights the side of the moon facing away from Earth & the side of the moon facing Earth is dark, which moon phase is this? |
| full moon | When you see the whole lighted side of the moon, which moon phase is this? |
| increasing | From new moon to full moon, do we see an increasing or decreasing amount of the lighted side of the moon? |
| eclipse | What do we call a blocking of light that we should be seeing from the sun or moon? |
| solar & lunar | What are 2 types of eclipses? |
| solar eclipse | When the moon is directly between the sun and Earth, what type of eclipse occurs? |
| new moon phase | During which moon phase does a solar eclipse occur? |
| lunar eclipse | When the Earth is directly between the sun and the moon, what type of eclipse occurs? |
| full moon phase | During which moon phase does a lunar eclipse occur? |
| because the moon's orbit is tilted | Why don't we have an eclipse every month? |
| umbra | the darkest part of the shadow of an eclipse |
| penumbra | the less dark shadow of an eclipse |
| total | If you are in the umbra, are you in a partial or total eclipse? |
| partial | If you are in the penumbra, are you in a partial or total eclipse? |
| tides | the regular rise & fall of the ocean's waters |
| the gravity of the moon | What causes tides? |
| high & low | What are 2 types of tides that occur each day? |
| 2 of each | How many high and low tides occur each day? |
| spring & neap | What are 2 types of tides that occur each month? |
| spring | What are the highest high tides called during the month when the sun, moon, and Earth are in a line? |
| neap | What are the lowest high tides called during the month when the sun, Earth, & moon are at right angles with each other? |