Which planet is known for having a thick atmosphere and is often called Earth's twin?

• Jupiter
• Mercury
• Venus
• Mars

What is the primary reason Pluto is classified as a 'dwarf planet'?

• It is smaller than other planets.
• It is too far from the Sun.
• It orbits in a different plane.
• It has no moons.

If you were to compare Earth and Mars, which statement is true about Mars?

• Mars has a breathable atmosphere.
• Mars is known as the 'red planet.'
• Mars has more moons than Earth.
• Mars is larger than Earth.

What is the center of our solar system?

• Earth
• Mars
• The Sun
• Jupiter

If you were to travel from Earth to the Sun, how far would you go?

• About 1 million miles
• About 10 million miles
• About 150 million miles
• About 93 million miles

How does the mass of the Sun compare to the rest of the solar system?

• It is equal to the mass of all planets combined.
• It makes up more than 99% of the mass.
• It is less than the mass of Jupiter.
• It is the same as Earth's mass.

What keeps the planets in orbit around the Sun?

• The Sun's gravity
• The moons' gravity
• Asteroids' gravity
• The planets' own gravity

What would happen if the Sun suddenly disappeared?

• The planets would continue orbiting as usual.
• The Sun would be replaced by another star.
• Life on Earth would thrive without the Sun.
• The planets would drift off into space.

What can we infer about the Sun's role in the solar system?

• It has no effect on the planets.
• It is the smallest object in the solar system.
• It is only important for Earth.
• It provides heat and light necessary for life.

Which of the following best describes the relationship between the Sun and the planets?

• The Sun orbits around the planets.
• The Sun's gravity keeps the planets in orbit.
• The planets are larger than the Sun.
• The planets create their own light.