Question

task three: thela and the moon
base your answers to questions 3 through 5 on the information below and on your knowledge of earth and space sciences.
theia and the moon
the giant impact hypothesis is the most widely accepted theory for the formation of the moon. shortly after earth formed, a small planetary body called theia collided with earth. based on the composition it was discovered that some remains of theia were embedded into earths interior. other remains formed into a ring of vapor, dust, and molten rock. eventually, the pieces clumped together (accreted), forming the moon. the late heavy bombardment is a period of time when earth, the moon, and the other inner planets experienced intense impact activity from asteroids and comets. these impacts created cratered surfaces on both earth and the moon. the late heavy bombardment is believed to have peaked about 3.9 billion years ago. the model below shows some information about the impact of theia with earth, an event that eventually led to the moons formation.
information about the moons early history can be obtained from observations of craters on the moons surface. the photographs below show four different impact craters

1. which table identifies the correct relative (comparing ages) ages of two craters and a piece of evidence that supports the hypothesis for the late heavy bombardment?

(1)

(2)

(3)

(4)

Explanation:

• Crater Age Determination:
• Older craters tend to have more weathering and smaller craters formed on or within them. Crater B has a weathered, less - distinct rim edge with smaller craters on it, indicating it is older. Crater D has a distinct rim and deep middle depression with ejected material around it, suggesting it is younger as it has not been significantly weathered or modified by subsequent impacts.
• Evidence for Late Heavy Bombardment:
• The Late Heavy Bombardment is characterized by a large number of impacts in a relatively short period. A large proportion of craters forming over a short period of time (\(A\ large\ proportion\ of\ craters\ were\ determined\ to\ have\ formed\ over\ a\ short\ period\ of\ time\)) is strong evidence for this event.
• Option (1): Craters of all ages covering the Moon's surface is a general statement about cratering in general, not specific evidence for the Late Heavy Bombardment.
• Option (2): Multiple smaller craters inside larger craters is a common feature in cratering (e.g., secondary craters), but it is not the most specific evidence for the Late Heavy Bombardment compared to a large - scale, short - time formation of craters.
• Option (3): The rims of smaller craters surrounded by younger ejecta materials is a local crater - related observation, not broad - scale evidence for the Late Heavy Bombardment.

Answer:

(4)