Which describes a constant in an experiment?

a.

the variable changed by the experimenter

b.
the quantity that must remain the same

c.
the variable that changes in response to the experiment

d.
the statement that is worded to test the experiment

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

Compare the composition of the moon's surface with the composition of the earth's surface.

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano