Question

part a: which earth system (sphere) is most directly studied when scientists compare mars’ surface landforms with earth’s landforms?
a. atmosphere
b. hydrosphere
c. geosphere
d. biosphere

part b: which piece of evidence best supports your answer to part a?
a. scientists study craters, valleys, and canyons on mars.
b. scientists compare the gases in mars’ thin air.
c. scientists look for signs of living organisms on mars.
d. scientists test the composition of martian ice.

1. part a: a student claims that channels on mars are evidence that liquid water once existed there. which term best describes the type of statement the student is making?

a. reasoning
b. claim
c. evidence
d. model

part b: which of the following would be the strongest evidence to support the student’s claim?
a. channels on mars branch in patterns like rivers on earth.
b. the air pressure on mars is lower than on earth.
c. dust storms regularly cover large regions of mars.
d. mars has large volcanoes like olympus mons.

Explanation:

Answer:

Part A (First): C. Geosphere
Part B (First): A. Scientists study craters, valleys, and canyons on Mars.

1. Part A: A. Reasoning
2. Part B: A. Channels on Mars branch in patterns like rivers on Earth.