Planets
Which planet is known as an ice giant?
Uranus
Jupiter
Mercury
Mars
Uranus
What unit of measurement do scientists and astronomers use to measure the distance between objects in space?
Astronomical Units
The Big Bang theory is the theory that the earth was formed from an explosion of the sun.
T or F
How long would it take for the sun's light to reach an object that is 1 light year away?
1 year
Which planet is the largest in our solar system?
Jupiter
How have scientists been able to figure out the age of our solar system?
by studying meteorites that have fallen to Earth's surface
What theory is an explanation for the formation of our solar system?
Nebular theory
The ________ is considered the source of all the sun's energy.
core
Which is the smallest planet?
Mercury
How old do scientists estimate our solar system to be?
4.5 billion years
A ________ is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
galaxy
How long does it take for sunlight to be felt on Earth after is has left the sun?
8 minutes
Which 2 planets have the most moons?
Jupiter and Saturn
In Astronomical Units, how far away is Earth from the Sun?
1
Who came up with the idea that galaxies are moving away from each other?
Edwin Hubble
The majority of the sun's solar radiation is reflected back into space.
T or F
True