Having the conditions necessary to support life
Any planet with a solid surface
A set of interacting parts forming a complex whole
A scientist who studies the solid, liquid, and gaseous matter that constitutes the Earth
A feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
The largest of the rocky planets
The smallest of the rocky planets
The most similar in size to Earth
The closest to the sun
Water has been found on these two planets
Earth is the ______ planet from the sun
Day and night are caused by this
The main cause of tides on Earth
What is the name of the Earth's oldest satellite
This causes Earth's seasons
Number of planets in our solar system
This "belt" is found between Mars and Jupiter
This planet was "demoted" to a planetoid
This causes objects in the solar system to stay in orbit
The four phases of the moon
The biosphere represents this on Earth
The atmosphere represents this on Earth
The hydrosphere represents this on Earth
The geosphere represents this on Earth
The four spheres on Earth
Habitable
Rocky Planet
System
Geologist
Landform
Earth
Mercury
Venus
Mercury
Earth and Mars
3
Rotation of the Earth
Gravitational pull of the moon
Moon
Earth's tilt
8
Asteroid
Pluto
Sun's gravity
Full, quarter, half, new
The air or gases surrounding the planet
Hydrosphere, biosphere, geosphere, and atmosphere
