Rocky Planets
These are the four planets in our solar system that have a solid, rocky outer surface.
B) Mercury, Venus, Earth, Mars
This word describes a planet that has the right conditions to support and sustain life.
C) Habitable
This is the main ingredient that scientists look for to prove a planet might have a history of active geologic processes.
A) Liquid water
This is the fictional agency you work for as a student planetary geologist.
B) Universal Space Agency
This vocabulary term means a natural feature found on a planet's surface, like a mountain, canyon, or sand dune.
C) Landform
In Lesson 1.2, scientists look at channels on Earth to see if the channel on Mars was made by water or by _____?
C) Lava
True or False: Universal Space Agency scientists have already found definitive, active evidence of a biosphere containing living things on Mars today.
False
This is the specific type of long, narrow groove landform that scientists discovered on Mars and want to investigate.
To solve planetary mysteries, geologists use the rule that similar landforms are usually made by similar ________.
Geologic Processes
This planet is roughly half the size of Earth and has a rocky geosphere covered in mountains, valleys, and craters.
Mars
This is the name for a scientist who studies the solid parts of planets, like rocks, layers, and landforms.
Planetary Geologist
This planet is closest to Earth in actual size, but it has a thick, deadly atmosphere that traps extreme heat.
This is the solid, rocky outer layer of a planet that includes all of its landforms.
Geosphere