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 12
A comet passes close to the Sun and speeds up. Explain why this happens in terms of gravitational effects.
A planet has twice the mass of Earth but the same radius. How does the gravitational acceleration on its surface compare to Earth's?
A satellite orbits Earth at a constant speed. Explain why it does not fall to the ground.
Describe how gravitational interactions lead to the formation of galaxies.
Describe how the gravitational pull of the Moon affects tides on Earth.
Explain why geostationary satellites must orbit above the equator.
Explain why the weight of an object is less on the Moon than on Earth.
A comet passes close to the Sun and speeds up. Explain why this happens in terms of gravitational effects.
If the distance between two planets is tripled, the gravitational force between them becomes: (1) 1/3 as strong (2) 1/6 as strong (3) 1/9 as strong (4) 1/27 as strong
If the mass of one object is doubled, how does the gravitational force between two objects change, assuming distance remains constant? (1) It halves (2) It doubles (3) It quadruples (4) It remains the same
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 a planet (2) The speed needed to leave a planet's gravitational field (3) The speed of light (4) The speed of sound in air
Fill in the blank: The force that keeps planets in orbit around the Sun is called ______.
Fill in the blank: The gravitational field strength at a point is defined as the ______ per unit mass at that point.
The acceleration due to gravity on the surface of the Earth is approximately ______ m/s².
The gravitational force between two objects is inversely proportional to the ______ of the distance between them.
True or False: Gravitational force acts only between objects with large masses.
True or False: The gravitational field strength on the surface of Mars is less than that on Earth.
True or False: The gravitational force between the Sun and Earth is responsible for Earth's orbit around the Sun.
True or False: The gravitational force between two objects increases as the distance between them increases.
