Motion in Universe

What does the orbital period of a celestial body depend on?

• The size of the body

• The body's distance from the object it is orbiting

• The temperature of the body

• The body's color

What is gravitational field strength (g)?

• The density of a celestial body

• A measure of gravitational acceleration experienced by objects

• The speed of light in vacuum

• A type of magnetic field

How do the orbits of planets and moons generally appear?

• Perfect circles

• Random patterns

• Elliptical

• Straight lines

What is the Universe a large collection of?

• Planets

• Solar systems

• Galaxies

• Stars

What is a galaxy a large collection of?

• Moons

• Asteroids

• Planets

• Stars

What galaxy is our Solar System in?

• Andromeda Galaxy

• Whirlpool Galaxy

• Milky Way Galaxy

• Triangulum Galaxy

What is weight defined as?

• The force acting on an object due to gravitational attraction

• The mass of an object on a planet

• The speed at which an object falls to the ground

• The distance an object is from the center of a planet

What is the role of a planet's gravitational field regarding nearby masses?

• It repels nearby masses

• It has no effect on nearby masses

• It attracts nearby masses with a strong gravitational force

• It only affects masses that are in direct contact with the planet

According to the IGCSE spec, what is the approximate value of the gravitational field strength on the surface of the Earth?

• 3.7 N/kg

• 10 N/kg

• 24.7 N/kg

• 11 N/kg

How does the gravitational field strength on Jupiter compare to that on Earth?

• It is the same as on Earth.

• It is less than on Earth.

• It is much greater than on Earth.

• It is half the value of Earth's gravitational field strength.