Solar System and Gravity Quiz

The planets in our solar system revolve around the sun and not the other way around because—

• The planets are much smaller than the sun and cannot produce enough heat to pull the sun toward them.

• The sun spins faster than the planets, causing them to move around it instead of the other way around.

• The sun's mass is much greater than that of the planets, so its gravitational force keeps the planets in orbit.

• The planets' atmospheres are too thin to hold the sun in their orbit.

A student observes a bright streak of light in the night sky. The student learns that this happens when a small rocky object from space enters Earth’s atmosphere and burns up due to friction. What did the student observe?

• A meteor

• An asteroid

• A comet

• A dwarf planet

Arrange the following planets in order from closest to the sun to farthest from the sun: Earth, Jupiter, Mars, Mercury.

• Mercury, Earth, Mars, Jupiter

• Earth, Mercury, Mars, Jupiter

• Mercury, Mars, Earth, Jupiter

• Earth, Mars, Mercury, Jupiter

Which of the following is true about gravity?

• Gravity can only be measured when objects can be seen.

• Gravity is strongest on objects that are very small.

• Gravity is a special type of velocity.

• Gravity acts everywhere in the universe.

The seventh planet from the sun is—

• Jupiter

• Uranus

• Saturn

• Neptune

Which two planets is the student most likely representing?

• Earth and Mars

• Earth and Venus

• Earth and Jupiter

• Earth and Mercury

About how many planets the size of Jupiter could fit in the size of the sun in our solar system?

• 1

• 10

• 1,000

• 1,000,000

Gravity played a key role in the formation of the solar system and continues to maintain the orbital motion of celestial bodies. Which of the following best explains the role of gravity in the solar system?

• Gravity pulled gas and dust together to form the sun and planets, and it keeps planets in their orbits around the sun.

• Gravity caused the planets to spin in opposite directions and determines the speed of their rotations.

• Gravity allows the sun to create energy, which keeps the planets in their orbits.

• Gravity pushes the planets away from the sun, preventing them from colliding.

How did the development of mathematical physics help advance our understanding of the solar system?

• It allowed us to see planets that were too far away to see by the human eye.

• It allowed scientists to discover life on other planets.

• It showed that the sun’s position in the solar system is fixed and unchanging.

• It provided a scientific explanation for the motion of nearby planets.

Which of the following events best illustrates the role of mathematics in advancing our understanding of the solar system?

• 1543: Copernicus publishes the heliocentric model, suggesting the sun is at the center of the solar system.

• 1609: Galileo uses a telescope to observe moons orbiting Jupiter.

• 1687: Newton publishes the law of universal gravitation to calculate planetary motion.

• 1990: The Hubble Space Telescope is launched, allowing detailed observations of distant celestial objects.