| A | B |
|---|
| equator | imaginary line that circles Earth halfway between the two poles |
| seasons | the four parts of the year |
| Northern Hemisphere | northern half of Earth |
| Southern Hemisphere | southern half of Earth |
| temperature | the measure of warmth or coldness |
| solar eclipse | when the moon, as it revolves, moves directly between the Sun and Earth |
| lunar eclipse | when the Moon moves into Earth's shadow |
| shadow | a dark figure or image cast on the surface of something |
| leap year | every fourth year when we have 366 days rather than 365 days |
| observatories | the Mayan's used this to measure the positon of the Sun in the sky |
