| A | B |
|---|
| the height of an object or point in relation to sea level or ground level | altitude |
| the time in the morning when the sun appears or full daylight arrives | sunrise |
| the time in the evening when the sun disappears or daylight fades | sunset |
| sunlight that strikes Earth’s surface at close to a 90° angle | direct sunlight |
| sunlight that strikes Earth’s surface at an acute angle (less than 90˚) | indirect sunlight |
| the action of rotating around an axis or center | rotate |
| move in a circular orbit around | revolve |
| the number of rotations the Earth makes in one year | 365 |
| the number of revolutions the Earth makes in one year | 1 |
