Gravitational Effects on Earth and Space Bodies
Physics ⇒ Earth and Space Physics
Gravitational Effects on Earth and Space Bodies starts at 8 and continues till grade 12.
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See sample questions for grade 10
Describe how gravity affects the motion of comets in the solar system.
Describe how gravity affects tides on Earth.
Describe what would happen to the gravitational force between two objects if both their masses are halved.
Explain why gravitational force is weaker between objects that are farther apart.
Explain why objects of different masses fall at the same rate in a vacuum.
Explain why satellites stay in orbit around Earth.
Explain why the gravitational force between the Earth and the Sun is much greater than between the Earth and the Moon.
Explain why the gravitational force between two objects is considered a non-contact force.
A 50 kg astronaut weighs less on the Moon than on Earth. Is this because (1) the Moon has less mass, (2) the astronaut's mass decreases, (3) gravity is stronger on the Moon, (4) the Moon is closer to the Sun?
If the distance between two objects is tripled, the gravitational force between them becomes (1) 1/3 as strong (2) 1/6 as strong (3) 1/9 as strong (4) 3 times as strong
Which law explains the gravitational attraction between two masses? (1) Newton's First Law (2) Newton's Second Law (3) Newton's Law of Universal Gravitation (4) Kepler's Third Law
Which of the following best describes escape velocity? (1) The speed needed to orbit Earth (2) The speed needed to leave Earth's gravitational pull (3) The speed of sound in air (4) The speed of light
Fill in the blank: The gravitational attraction between the Earth and the Moon causes _______.
Fill in the blank: The gravitational force between two objects decreases as the _______ between them increases.
Fill in the blank: The gravitational force between two objects is directly proportional to the product of their _______.
Fill in the blank: The gravitational force is an example of a _______ force.
A satellite orbits Earth at a constant speed. Is it accelerating?
True or False: Gravitational force acts only on objects with mass.
True or False: The gravitational force between two objects depends only on their masses.
True or False: The gravitational force between two objects increases as the distance between them increases.
