The Solar System 1
The closest planet to the Sun
What is Mercury
The outer planets are also known as...
What are Gas Giants
Is measured in seconds
What is time
It keeps the planets orbiting the sun
What is gravity
The first man on the moon
Who is Neil Armstrong
The biggest mountain on the solar system
What is mount Olympus
The structure that divides the inner planets and the outer planets
What is the asteroid belt
Change in position over time
what is velocity/speed
A unit defined as the distance from the earth to the sun
What is a astronomical unit
He described gravity and invented calculus
Who is Sir Isaac Newton
Io, Callisto, Europa and Ganymede
What are the Galilean moons
This is what causes the moon to have no weather.
What is the lack of an atmosphere
A type of motion of an object thrown into the air
What is projectile motion
This is a cloud of gas and dust that formed our solar system.
What is a nebula
He introduced the heliocentric model of the solar system
Who is Nicolaus Copernicus
You can see it every 75 years
What is Halley's Comet
It has the hottest surface of the planets in the solar system
What is Venus
The distance covered by light in one year
What is a light year
It sustains stars from collapsing due to their own gravity
What is nuclear fusion
The first man in space
Yuri Gagarin
The Huygens mission landed in this moon and found rivers of methane in its surface
What is Titan
The biggest moon of Neptune
What is Triton
It explains the change in pitch of sirens as they pass by
What is the Doppler effect
The range of distances to a star at which liquid water can exist
What is the habitable zone
This planet was discovered on September 23, 1846
What is Neptune