Universe Flashcards
(10 cards)
How long does it take light to reach Earth?
It takes 4 years for light to reach Earth.
What does ‘light year’ mean?
‘Light year’ means the distance light travels in one year.
What is the distance of one light year in kilometers?
1 light year = 9.5 trillion km.
What is the nearest star to Earth?
Proxima Centauri is the nearest star, located 4 light years away.
What shape do planets orbit in?
Planets move in elliptical orbits.
What is the Sun?
The Sun is a star.
What is the Sun’s size compared to other objects?
The Sun is huge and has a massive amount of energy.
What is gravity?
Gravity is the force that attracts objects towards each other.
What is our Solar System?
Our Solar System consists of the Sun and the planets that orbit it.
What is a planet?
A planet is something that orbits a star.
