What is the primary evidence used to determine the age of the solar system? A. Rock samples from the Moon
B. Gas samples from the Sun
C. The craters on the Moon
O O
D. Rock samples from Earth

Hey, how's your day going.

Your answer is (should be, but I haven't done the test) A,

rock samples from the moon.

The reason why we like to test "moon rocks" is because they are undisturbed for millions of years. Were as on earth we have lots of things that could mess up our dating (wind, water, animals, geological processes, etc.) That is why you can't tell the age of the solar system from your cack yard rocks.

(My reasoning ^, not the internets!)

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

happy to

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