| A | B |
|---|
| What is the motion of the Earth turning on its axis called? | rotation |
| Why are the tropics warm and sunny year round? | The tropics receive 12 hours of direct sunlight year round. |
| Describe the summer solstice. | It is the day of the year when there are more hours of daylight than darkness. |
| What is the motion of the Earth orbiting the Sun? | revolution |
| What is a year? | The time it takes for the Earth to orbit the Sun. |
| What causes the seasons of the year? | The tilting of the Earth on its axis to a maximum angle of 23.5°. |
| During the winter months the polar regions of the Earth receive almost 24 hours of what? | darkness |
| If the Northern Hemisphere is experiencing summer, then the Southern Hemisphere is experiencing what season? | winter |
| What is an equinox? | A day of the year when the hours of darkness equal the hours of daylight. |
| Which prevailing wind belt affects most of the United States? | Westerlies |
