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Front

What happens to the gravitational force between two planets as they move farther apart?

Back

The gravitational force between them becomes less.

Front

What do gravitational field lines represent?

Back

Gravitational field lines are lines that point towards the center of a mass.

Front

What characterizes a uniform gravitational field?

Back

A uniform gravitational field has evenly spaced field lines and a constant magnitude.

Front

What causes an astronaut to feel weightless in a reduced-gravity airplane?

Back

The astronaut feels weightless when the plane's downward acceleration matches gravity.

Front

Why does an astronaut feel weightless while orbiting the Earth?

Back

The astronaut and the space station are both falling around the Earth, leading to the sensation of apparent weightlessness.

Front

What is the relationship between distance and gravitational force?

Back

As the distance between two masses increases, the gravitational force decreases.

Front

What is the direction of gravitational field lines?

Back

Gravitational field lines point towards the center of the mass creating the field.

Front

What is a non-uniform gravitational field?

Back

A non-uniform gravitational field has varying strength and direction of field lines.

Front

What is the effect of gravity on an object in free fall?

Back

An object in free fall experiences a constant acceleration due to gravity.

Front

What is the definition of weightlessness?

Back

Weightlessness is the sensation experienced when there is no net force acting on an object, often in free fall.