Question

sol snapshot - challenge yourself by answering the sol - style questions bel some from 6th grade or a previous 7th - grade unit. 8th grade science: earth - sun system mechanics the relationship between the earth and the sun governs some of the most basic cycles we e year. these cycles - day/night and the seasons - are caused by two key movements of our first, the cycle of day and night is caused by earths rotation, or spinning on its central axis. th 24 hours, giving us a complete day and night cycle. second, the changing seasons are caused by a combination of two factors: earths revolut the tilt of its axis (about 33.5°). as earth orbits, the tilt causes the hemispheres to receive diffe at different times of the year. for example, when the northern hemisphere is tilted toward fl concentrated light, resulting in summer.
question
answer each question by circling the best answer.
which motion of earth causes the cycle of day and night?
a. revolution around the sun
b. rotation on its axis
c. revolution of the moon
d. the earths tilted axis

which two factors are most responsible for the changes in seasons on earth?
a. the position of the moon and the distance to the sun.
b. the earths rotation and the suns temperature
c. the earths revolution around the sun and the tilt of earths axis
d. the phases of the moon and the length of a day

during the summer in the northern hemisphere, the earths axis is tilted —
a. away from the sun, causing indirect rays
b. neither toward nor away from the sun
c. toward the sun, causing more direct rays
d. toward the moon, causing higher tides

Explanation:

First Question:

To determine the motion causing day - night cycle, we refer to the text: "the cycle of day and night is caused by Earth's rotation, or spinning on its central axis".

• Option A: Revolution around the Sun causes seasons, not day - night.
• Option B: Matches the text description of Earth's rotation causing day - night.
• Option C: Moon's revolution is not related to Earth's day - night cycle.
• Option D: Earth's tilted axis is related to seasons, not day - night.

For the factors of seasonal change, the text says "the changing seasons are caused by a combination of two factors: Earth's revolution... and the tilt of its axis".

• Option A: Moon's position and Sun - Earth distance are not the main factors for seasons.
• Option B: Earth's rotation causes day - night, Sun's temperature doesn't drive Earth's seasons.
• Option C: Matches the text's description of Earth's revolution and axis tilt as seasonal factors.
• Option D: Moon's phases and day length are not related to seasons.

From the text: "when the Northern Hemisphere is tilted toward [the Sun], it receives... concentrated light, resulting in summer".

• Option A: Tilt away would cause winter - like conditions (indirect rays), not summer.
• Option B: If neither toward nor away, there would be no seasonal difference, which is not the case in summer.
• Option C: Tilt toward the Sun gives more direct rays, leading to summer in the Northern Hemisphere, which matches the text.
• Option D: Tilt toward the Moon is not related to seasonal heating from the Sun.

Answer:

B. Rotation on its axis

Second Question: