Gravity and Space Quiz

What is escape velocity?

• Escape velocity is the maximum speed an object can achieve in space

• Escape velocity is the speed at which an object can travel through time

• Escape velocity is the speed at which an object will fall back to the ground

• Escape velocity is the minimum speed an object must have in order to break free from the gravitational attraction of a massive body without further propulsion.

What is the formula to calculate escape velocity?

• v = √(GM/r)

• v = √(2GM/r)

• v = GM/r

• v = 2GM/r

What is the value of escape velocity on Earth?

• 5.7 km/s

• 20.3 km/s

• 8.9 km/s

• 11.2 km/s

What is gravity?

• Gravity is the force that only affects objects with a lot of mass.

• Gravity is the force that pushes objects away from a planet or other body.

• Gravity is the force by which a planet or other body draws objects toward its center.

• Gravity is the force that causes objects to float in space.

Who discovered the law of universal gravitation?

• Albert Einstein

• Galileo Galilei

• Marie Curie

• Sir Isaac Newton

What is the solar system?

• The solar system is a group of stars that orbit around the Earth.

• The solar system is a single planet that orbits around the sun.

• The solar system is a cluster of galaxies that revolve around the sun.

• The solar system is a collection of planets, moons, asteroids, comets, and other objects that orbit around the sun.

How many planets are there in the solar system?

• 10

• 12

• 6

• 8

What are the names of the inner planets in the solar system?

• Pluto, Ceres, Eris, Haumea

• Sun, Moon, Saturn, Jupiter

• Mercury, Venus, Earth, and Mars

• Jupiter, Saturn, Uranus, Neptune

What are the names of the outer planets in the solar system?

• Mars, Venus, Mercury, Earth

• Pluto, Mercury, Venus, Mars

• Jupiter, Saturn, Uranus, and Neptune

• Saturn, Jupiter, Mars, Venus

What are the different phases of the moon?

• Summer moon, autumn moon, winter moon

• Morning moon, afternoon moon, evening moon

• Blue moon, red moon, yellow moon

• The different phases of the moon are new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent.