Gravity & the Universe

Front

What is inertia?

Back

Inertia is the tendency of an object to resist a change in its state of motion, whether that means staying at rest or continuing to move at a constant speed in a straight line.

Front

What does gravity do?

Back

Gravity is a force that attracts two bodies towards each other, keeping objects on the ground and causing planets to orbit stars.

Front

How does the mass of an object affect its inertia?

Back

The greater the mass of an object, the greater its inertia. This means heavier objects resist changes in motion more than lighter objects.

Front

What is the relationship between gravity and mass?

Back

The strength of gravity between two objects increases with their mass. More massive objects exert a stronger gravitational pull.

Front

What is Newton's first law of motion?

Back

Newton's first law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What keeps the planets in orbit around the Sun?

Back

The Sun's gravity keeps the planets in orbit, preventing them from floating off into space.

Front

What is the effect of gravity on the Moon's motion?

Back

Gravity from the Earth keeps the Moon in orbit around it, affecting its speed and direction.

Front

What happens to an object's velocity if no forces act on it?

Back

If no forces act on an object, its velocity remains constant.

Front

What is the role of the Sun's gravity in the solar system?

Back

The Sun's gravity is the central force that governs the motion of all planets, asteroids, and comets in the solar system.

Front

How does the Moon's gravity affect Earth?

Back

The Moon's gravity causes tides on Earth, influencing the rise and fall of sea levels.