| A | B |
|---|
| crescent moon | the shape of the moon in its first and last quarter |
| full moon | the moon phase in which we see the entire half of the moon facing the earth lit. |
| waxing moon | refers to the moon appearing larger each night. |
| waning moon | refers to the moon appearing smaller each night |
| first quarter moon | a phase of the moon in which the right half of the side of the moon facing the Earth appears visible. |
| last (third) quarter moon | a phase of the moon in which the left half of the side of the moon facing the earth appears visible. |
| lunar eclipse | when the earth comes between the sun and the moon and the moon enters the earth's shadow. |
| gibbous moon | moon phase where 3/4 of the moon can be seen, it looks like a circle that is not quite round. |
| tides | the rise and fall of the surface level of the ocean. caused mostly by the gravity of the moon. usually takes place every twelve hours. high tide always occurs on the side of the earth that is facing the moon. |
| new moon | the pase of the moon in which we do not see any of it from the earth - think of it as "no moon" |
| solar eclipse | when the moon comes between the sun and the Earth, casting its shadow on the earth. |
| photoshpere (of sun) | the visible surface of the sun and other stars |
| corona (of sun) | the outermost part of the sun, visible as a halo of light during a solar eclipse. |
| seasons | cause by the tilt of the Earth's axis, changing the amount of angle of sunlight a hemisphere receives. |
| sun | the medium sized yellow star at the center of our solar system |
