Having the conditions necessary to support life.
Habitable
a planet with a solid surface, such as Earth or Mars
rocky planet
the living things on a planet
biosphere
a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
landform
compare
information about the natural world that is used to support or go against (refute) a claim
evidence
the solid part of a rocky planet
geosphere
the process of making clear how your evidence supports your claim
reasoning
an object, diagram, or computer program that helps us understand something by making it simpler or easier to use
model
the mixture of gases surrounding a planet
atmosphere
all the liquid water and solid water (ice) on a planet
hydrosphere
a set of interacting parts forming a complex whole
system
a proposed answer to a question about the natural world
claim
a long, narrow groove that forms where water, lava, or other liquid flows
channel
a scientist who studies the geosphere of planets in our solar system
planetary geologist
an event or series of events that causes changes in the geosphere, such as flowing water or flowing lava
geologic process
a claim supported by evidence
scientific argument