Solar System and Universe

Name the planets in our solar system.

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• Earth, Mars, Jupiter, Saturn, Pluto

• Mercury, Venus, Earth, Mars, Jupiter, Saturn

• Mars, Jupiter, Saturn, Uranus, Pluto

What is a light year?

• The time it takes for light to travel from the Sun to Earth.

• The distance that light travels in one year (about 9.46 trillion kilometers or 5.62 trillion miles).

• A measure of time used in astronomy.

• The speed at which light travels in a vacuum.

What is a comet?

• A small celestial body made of ice, dust, and rocky material that orbits the sun.

• A large planet that is primarily composed of gas and has no solid surface.

• A star that has exploded and is no longer visible in the night sky.

• A type of asteroid that is found in the asteroid belt between Mars and Jupiter.

What is the universe?

• All of space and everything in it.

• A vast collection of stars and planets only.

• A theoretical concept with no physical existence.

• A region of space devoid of matter.

What is a black hole?

• A massive star that has exploded in a supernova

• A region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

• A type of galaxy that contains a supermassive star

• An area in space filled with dark matter that cannot be seen

What is the Milky Way?

• A type of star

• The galaxy that contains our solar system.

• A planet in our solar system

• A black hole in space

What is the solar system?

• A collection of stars in a galaxy.

• The system consisting of the sun, the planets, and other objects that revolve around it.

• A group of moons orbiting a planet.

• The region of space beyond the Milky Way.

What is a planet?

• A celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

• A large mass of rock that does not orbit a star.

• A small, icy body that travels through space.

• A star that has not yet ignited nuclear fusion.

What is a galaxy?

• A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.

• A collection of planets orbiting a single star.

• A large cloud of gas and dust floating in space.

• A small cluster of stars that are not gravitationally bound.

What is the main component of the solar system?

• The sun.

• The Earth.

• The Moon.

• Jupiter.