Solar System Flashcards
(20 cards)
Was once a planet. Now called a dwarf planet.
Pluto
The 4th planet from the sun. Also called the “Red Planet.”
Mars
A large body of rock or gases that orbits the sun.
planet
The 1st planet in the solar system.
Mercury
Spinning like a top, responsible for the Earth having day and night.
Earth’s rotation
The farthest planet from the sun. Very dark and very cold.
Neptune
A line–which you cannot see–that runs through the center of Earth from the North Pole to the South Pole.
axis
The 3rd planet from the sun. (Our home)
Earth
Someone who travels in a spacecraft.
astronaut
The 2nd planet from the sun. Scientists think this planet may have had oceans, but it evaporated due to the sun’s heat.
Venus
The movement of Earth once around the Sun, also called an orbit. The reason we have seasons. It takes 365 days to complete.
Earth’s revolution
Is the star at the center of the Solar System.
Sun
The 5th planet from the sun. Also the largest of the lanets.
Jupiter
6th planet from the Sun and the second largest planet in the Solar System, after Jupiter.
Saturn
The sun, the planets, and the other objects that orbit the sun.
solar system
A group of stars that appear to form a picture.
constellation
Areas of darkness caused by an object in the direct path of the sun. This changes as the sun appears to move through the sky each day.
shadow
7th planet from the sun.
Uranus
Stages of the moon’s cycle.
moon phases
The only natural satellite of the Earth.
Moon
