Vocabulary
object that is smaller than a planet, but is round and orbits the sun
Name the four terrestrial planets
Mercury, Venus, Earth, Mars
a large planet mostly composed of helium and/or hydrogen
Gas giant
hot ball of glowing gases at the heart of our solar system
sun
How many moons does Earth have?
1
large planet made mainly of helium and hydrogen
gas giant
Earth-like planets made up of rocks or metals with a hard surface
Terrestrial planets
The largest and most massive planet in our solar system
Jupiter
infrared radiation produces _______
heat
a rocky, cratered place, roughly a quarter the size of Earth and an average of 238,855 miles away
the moon
large object that circles around the sun or any other star
planet
smallest terrestrial planet in the solar system
Mercury
The 7th planet in the solar system
Uranus
we cannot see ultraviolet light, but it can
burn our skin
What light does the moon reflect in order to appear to shine
Light from the sun
the galaxy we live in
Milky Way
The hottest planet in the solar system
Venus
Which planet has a storm known as the Great Dark Spot
Neptune
Name one way we can protect ourselves from ultraviolent light
hat, clothes, sunscreen
Who was the first person to walk on the moon
Neil Armstrong
ring of icy objects, like Pluto, beyond Neptune’s orbit
Kuiper Belt
The largest terrestrial planet
Earth
Neptune, Uranus, Saturn, Jupiter
Name the three types of energy produced by the sun
infrared radiation, ultraviolet light, and visible light
How long does it take for the moon to orbit Earth
27 days