Solar System
Which planet is known as the Red Planet?
What is Mars?
This force keeps planets orbiting the Sun.
What is gravity?
This is the closest star to Earth.
What is the Sun?
Between sound and light, this travels faster.
What is light?
This astronaut became the first person to walk on the Moon.
Who is Neil Armstrong?
Earth's seasons are caused by this feature of our planet.
What is Earth's axial tilt?
According to Newton's First Law, motion changes only when this acts on an object.
What is an unbalanced force?
A massive collection of stars, gas, and dust held together by gravity is called this.
What is a galaxy?
This color of visible light has the longest wavelength.
What is red?
This element makes up most of the Sun.
What is hydrogen?
This planet has the shortest year in the Solar System.
What is Mercury?
This is the SI unit used to measure force.
What is a newton?
This is the name of the galaxy that contains our Solar System.
What is the Milky Way?
This type of electromagnetic radiation is responsible for most sunburns.
What is ultraviolet (UV) light?
Who developed the Theory of Relativity?
Who is Albert Einstein?
This moon of Jupiter is larger than the planet Mercury.
What is Ganymede?
Astronauts aboard the International Space Station float because they are in this condition.
What is continuous free fall?
A massive star can explode in this spectacular event at the end of its life.
What is a supernova?
Sunlight takes about this long to reach Earth.
What is eight minutes?
This Martian volcano is the largest in the Solar System.
What is Olympus Mons?
Beyond Neptune lies this region filled with icy dwarf planets and comets.
What is the Kuiper Belt?
If the same force is applied but an object's mass doubles, this happens to its acceleration.
What is "it is cut in half?"
This invisible boundary around a black hole marks the point where even light cannot escape.
What is the event horizon?
The daytime sky appears blue because of this effect.
What is Rayleigh scattering?
This is the approximate speed of light in a vacuum, measured in kilometers per second.
What is 300,000 kilometers per second?