Lesson 1 - longer

What does "LY" stand for in astronomical measurements?

• Light yards

• Light years

• Long years

• Lunar years

What is a light year used to measure?

• Time between solar eclipses

• Distance between planets

• Distance between galaxies

• Speed of light

Which of the following is a celestial object found in the sky?

• Mountains

• Rivers

• Stars

• Forests

Which celestial object is known for having a tail and orbiting the sun?

• Planets

• Comets

• Moons

• Asteroids

What is the term for a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter?

• Galaxies

• Black holes

• Moons

• Asteroids

Which celestial object is known for its gravitational pull so strong that nothing, not even light, can escape it?

• Stars

• Planets

• Black holes

• Comets

What holds a star together?

• Electromagnetic force

• Gravity

• Nuclear force

• Friction

What do stars emit?

• Water

• Sound

• Energy

• Dust

What does it mean when we say stars are luminous?

• They absorb light

• They reflect light

• They give off light

• They block light

What size is our Sun classified as?

• Small star

• Medium-sized star

• Large star

• Giant star