| A | B |
|---|
| Almost all the energy on Earth comes from the _. | SUN |
| Energy from the _ powers Earth's weather. | SUN |
| Energy given off by the Sun is called _. | SOLAR ENERGY |
| Heat from the Sun causes water to change from a liquid to a _. | GAS |
| The Sun heats the Earth's surface | UNEVENLY |
| _ form because of the uneven heating of Earth by the Sun. | WIND SYSTEMS |
| The Sun's _ keeps Earth in orbit around the Sun. | GRAVITY |
| An _ occurs when one object in space gets between the Sun and another object. | ECLIPSE |
| A _ occurs when the Moon passes through the Earth's shadow. The Moon is shaded, so you don't see it. | LUNAR ECLIPSE |
| A _ occurs when the Moon passes between the Sun and Earth and casts its shadow on Earth. For a short time, light from the Sun is blocked and you can't see it. | SOLAR ECLIPSE |
| Earth turns on an imaginary line that goes through its center called the _. | AXIS |
| _ are short-term changes in climate that happen at the same time each year. They are not affected by the distance of the Earth from the Sun. | SEASONS |
| In the _, the Northern Hemisphere gets more direct sunlight than the Southern Hemisphere. | SUMMER |
| In the _, the Sun is most directly over the equator. Both hemispheres get about the same amount of energy from the Sun. | FALL |
| This season has shorter days. The North Pole is tilted away from the Sun. The Northern Hemisphere gets less direct sunlight than the Southern Hemisphere. | WINTER |
| During this season the equator is getting the most direct sunlight. This happens towards the end of March in the Northern Hemisphere. | SPRING |
