Question

1. winter occurs in the northern hemisphere when it is

a. tilted away from the sun
b. tilted toward the sun
c. farthest away from the sun in earths orbit
d. on the dark side of earth

1. how long does it take for earth to rotate once?

a. 365 days
b. 28 days
c. 24 hours
d. 1 hour

1. the tilt of the earths axis explains why we have

a. days and nights
b. meteor showers
c. seasons
d. tides

1. as we go from summer to winter in the northern hemisphere,

a. earth gets farther from the sun
b. the angle of tilt of earths axis decreases
c. the angle that the suns rays strike the ground decreases
d. the angle that the suns rays strike the ground increases

1. the main cause of the seasons is

a. variations in the suns energy
b. the changing distance of earth from the sun
c. the changing speed of earths revolution
d. earths axis is tilted

1. as earth revolves around the sun, earths axis

a. remains at the same angle, pointed in the same direction
b. remains at the same angle, but points in different directions
c. changes angles, but points in the same direction
d. changes angles and points in different directions

1. when is the sun directly overhead at the equator?

a. summer solstice
b. winter solstice
c. summer and winter solstices
d. vernal and autumnal equinoxes

1. when is the earths axis tilted neither toward nor away from the sun?

a. summer solstice
b. winter solstice
c. summer and winter solstices
d. vernal and autumnal equinoxes

Explanation:

1. Winter in the Northern Hemisphere occurs when it is tilted away from the sun. This is because the tilt affects the amount of sunlight received.
2. Earth takes 24 hours to rotate once. Rotation is what causes day and night.
3. The tilt of the Earth's axis explains seasons. Different tilts towards or away from the sun lead to different seasons.
4. As we go from summer to winter in the Northern Hemisphere, the angle that the sun's rays strike the ground decreases. This is due to the tilt change.
5. The main cause of the seasons is that Earth's axis is tilted. The tilt leads to different sunlight distributions.
6. As Earth revolves around the sun, Earth's axis remains at the same angle, pointed in the same direction.
7. The sun is directly overhead at the equator during vernal and autumnal equinoxes.
8. The Earth's axis is tilted neither toward nor away from the sun during vernal and autumnal equinoxes.

Answer:

1. a. tilted away from the sun
2. c. 24 hours
3. c. seasons
4. c. the angle that the sun's rays strike the ground decreases
5. d. Earth's axis is tilted
6. a. remains at the same angle, pointed in the same direction
7. d. vernal and autumnal equinoxes
8. d. vernal and autumnal equinoxes