OSE 8.4 Lessons 1-5 Test

What happens during the winter solstice in the Northern Hemisphere?

• A. The Earth is closest to the Sun.
• B. The North Pole is tilted most directly toward the Sun.
• C. The Earth's orbit is fastest.
• D. The North Pole is tilted away from the Sun.

Why do stars, including our Sun, appear to move across the sky from east to west?

• A. Because the Earth orbits the Sun from east to west.
• B. Because the Moon rotates around the Earth.
• C. Because the Earth rotates on its axis from west to east.
• D. Because stars actually move from east to west.

Why does the Northern Hemisphere experience summer when it is tilted toward the Sun?

• A. Because the hemisphere is closer to the Sun.
• B. Due to the increased concentration of sunlight in one area.
• C. It receives sunlight more directly than the Southern Hemisphere.
• D. The tilt of the Earth does not affect on seasons.

What would happen if the Earth were not tilted on its axis?

• A. We would still have seasons, but they would be less pronounced.
• B. The Moon would not orbit the Earth.
• C. No seasons would exist, and temperature differences would mainly depend on latitude.
• D. The Earth would not orbit the Sun.

Why do stars appear to move in a circular path around the North Star in the Northern Hemisphere?

• A. Because the North Star moves in a circular path.
• B. Because the Earth spins counterclockwise on its axis.
• C. Due to the Earth's orbit around the Sun.
• D. Because stars follow the magnetic field lines of the Earth.

What determines the intensity of sunlight on Earth's surface?

• A. The angle of sunlight hitting the Earth.
• B. The Earth's distance from the Sun.
• C. The amount of water vapor in the atmosphere.
• D. The Earth's rotation speed.

What demonstrates the cyclical pattern of day length over a year?

• A. Constant day length throughout the year.
• B. Random changes in day length.
• C. Day length depends on the Moon's phases.
• D. A gradual increase then decrease in day length, repeating annually.

What causes the apparent motion of the Sun across the sky?

• A. The Sun's orbit around the Earth.
• B. The Earth's rotation on its axis.
• C. The Moon's orbit around the Earth.
• D. The Earth's orbit around the Sun.

Why do the stars visible in the night sky change over a year?

• A. Because the Earth orbits the Sun, changing our view of the stars.
• B. Stars move away from or closer to Earth.
• C. The brightness of stars changes over time.
• D. The Moon blocks different stars at different times.

What causes day and night on Earth?

• The rotation of the moon.

• The rotation of the sun.

• The rotation of Earth on its axis.

• The rotation of Mars.