Question

you may have thought the ocean moves in and out, but more accurately, the earth moves in and out of the ______. as earth rotates, the water bulges stay in line with the moon while the planet’s surface moves underneath it. when our location is in the area of a ____, it experiences a high tide. as we travel, when our location reaches a valley it experiences a ____ tide. if we complete one planetary rotation our specific location will pass through both bulges and both valleys.

it feels like we are forgetting a pretty big object in our solar system. what about the _____? the sun’s location in relation to the moon _______ the strength of the pull on the ocean. the sun is even bigger than the moon. remember the greater the mass of the objects and the closer they are to each other, the greater the gravitational attraction between them.

so even though the sun is far more _________ than the moon, it’s much __________ away. this means the sun’s tidal force on earth ends up being about half that of the moon’s. how the sun affects the tides depends on its arrangement with the earth and the moon.

when earth, the sun and the moon are all _______ up, the gravity of the moon and the sun add up, resulting in higher high tides and lower low tides, called __________ tides. this happens when the moon is either on the same side of earth as the sun, new moon, or directly on the opposite side of earth, full moon.

Explanation:

These blanks relate to lunar and solar tidal forces on Earth. Tides form as Earth moves through ocean bulges from the Moon's gravity; bulges cause high tides, valleys (low points) cause low tides. The Sun also impacts tides: its mass is larger but it is farther, so its tidal force is weaker than the Moon's. When Earth, Sun, and Moon align, their gravitational forces combine to create stronger spring tides.

Answer:

1. ocean bulges
2. water bulge
3. low
4. Sun
5. affects
6. massive
7. farther
8. lined
9. spring