Problem 13
What kind of eclipse occurs when the Moon blocks sunlight from reaching Earth? A) solar C) full B) new D) lunar
Problem 14
What is the darkest part of the shadow during an eclipse? A) waxing gibbous C) waning gibbous B) umbra D) penumbra
Problem 15
What is the name for a depression on the Moon caused by an object striking its surface? A) eclipse C) phase B) moonquake D) impact basin
Problem 15
Describe what a person standing in the Moon's umbra would see if he or she looked at the sky wearing protective eyewear.
Problem 16
The tilt of Earth on its axis causes seasons. Give two reasons why this tilt causes summer to be warmer than winter.
Problem 16
Predict how the Moon would appear to an observer in space during its revolution. Would phases be observable? Explain.
Problem 17
Predict what the effect would be on Earth's seasons if the axis were tilted at \(28.5^{\circ}\) instead of \(23.5^{\circ}\).
Problem 17
When the Apollo missions ended in 1972, 12 astronauts had visited the Moon and brought back samples of moon soil and rock. Explain why we continue to send orbiting spacecraft to study the Moon.
Problem 18
Define the term impact basin, and name the largest one known in the solar system.
Problem 18
Infer Seasons in the two hemispheres are opposite. Explain how this supports the statement that seasons are NOT caused by Earth's changing distance from the Sun.
