ash: Small, light pieces of rock or glass ejected by a volcanic eruption. A group of deciduous trees in the olive family that are popular for landscaping and timber.
asteroid: A rocky object that orbits around the sun. Most asteroids orbit the region between the orbits of Mars and Jupiter, known as the asteroid belt.
bedrock: A thick, hard layer of rock beneath the earth’s surface soil or other broken rock.
heavenly: Of or relating to the sky or outer space.
compound: A substance formed when two or more chemical elements are combined in a certain proportion, such as water (H2O).
element: The smallest unit of more than 100 substances, such as hydrogen, oxygen, and carbon.
force: External influences that can change the motion of objects or cause stress in stationary objects.
glass: A hard and brittle substance made from silica, usually transparent and inert.
Hue: A color or shade of a color.
hydrocarbon: Large molecules containing carbon and hydrogen atoms, such as crude oil.
iron: A metallic element commonly found in the Earth’s crust and cosmic dust.
lava: Molten rock that comes out of volcanoes.
of the moon: Of or relating to the Earth’s moon.
meteorite: A chunk of rock or metal that comes from space and hits the ground.
methane: A hydrocarbon with chemical formula CH4, important greenhouse gas.
month: Natural satellites of all planets.
oxide: A compound formed by combining elements with oxygen, such as rust.
particle: A trace amount of something.
planet: A large celestial body that orbits a star.
red planet: Nickname for Mars.
regolith: Thick soil layer and weathered rock.
silicate: A mineral containing silicon atoms and usually oxygen atoms.
silicon: A nonmetallic semiconductor element used to create electronic circuits.
solar: Related to the sun or the radiation it emits.
solar system: The major planets, moons, and other celestial bodies that orbit the sun.
system: A network of parts that work together to accomplish a function.
titan: A word referring to a gigantic being, also a satellite of Saturn.
volcano: A place where magma or gas erupts from the Earth’s crust.
Source: www.snexplores.org
