1. We have pictures taken from the surface of Venus, Earth, the Moon, and Mars. Venus shows a
yellow sky, Mars shows a pinkish sky, Earth has a blue sky with white clouds, but pictures from
the Moon show a black sky. Why is the sky on the Moon black? 2. How can we use impact
craters to tell us about the relative ages of different surfaces on the terrestrial planets? 3. Why are
Mercury, Venus, and Mars difficult to see when they are farthest from Earth? 4. Apollo astronaut
David Scott dropped a hammer and a feather together on the Moon to show that both would hit
the ground at the same time. Galileo had done the same experiment with two solid balls. What
advantage did Scott have that let him conduct his experiment as he did?
(https://apod.nasa.gov/apod/ap111101.html, since I didn't have time to show it in class!) 5. Give
a brief description of the "greenhouse effect". 6. Imagine the Earth formed with only 10% of its
current mass, but still at the same distance from the sun. Would it be more or less likely to have
geological activity today? Explain. What about having an atmosphere? Would it be more or less
likely? Explain..
1- We have pictures taken from the surface of Venus- Earth- the Moon-.pdf
1. 1. We have pictures taken from the surface of Venus, Earth, the Moon, and Mars. Venus shows a
yellow sky, Mars shows a pinkish sky, Earth has a blue sky with white clouds, but pictures from
the Moon show a black sky. Why is the sky on the Moon black? 2. How can we use impact
craters to tell us about the relative ages of different surfaces on the terrestrial planets? 3. Why are
Mercury, Venus, and Mars difficult to see when they are farthest from Earth? 4. Apollo astronaut
David Scott dropped a hammer and a feather together on the Moon to show that both would hit
the ground at the same time. Galileo had done the same experiment with two solid balls. What
advantage did Scott have that let him conduct his experiment as he did?
(https://apod.nasa.gov/apod/ap111101.html, since I didn't have time to show it in class!) 5. Give
a brief description of the "greenhouse effect". 6. Imagine the Earth formed with only 10% of its
current mass, but still at the same distance from the sun. Would it be more or less likely to have
geological activity today? Explain. What about having an atmosphere? Would it be more or less
likely? Explain.
