Understanding Gravity and Its Effects

What force causes objects to fall to the ground?

• Friction

• Magnetism

• Gravity

• Air resistance

What would happen to everything on Earth without the force of gravity?

• It would all stay in place

• It would all be pushed into the Earth's core

• It would all float off into space

• It would all move sideways

Who was the first person to seriously study gravity over 300 years ago?

• Albert Einstein

• Galileo Galilei

• Sir Isaac Newton

• Stephen Hawking

When people say gravity pulls things "down," what does "down" actually mean in relation to Earth?

• Away from the Earth's surface

• Towards the Earth's center

• Towards the sky

• Towards the bottom of the planet

What must astronauts achieve to overcome Earth's gravity and travel to the Moon?

• A specific altitude

• Escape velocity

• A certain amount of fuel

• A powerful engine

Which two factors determine the strength of the gravitational pull between two objects?

• Their color and temperature

• Their mass and the distance between them

• Their speed and direction

• Their shape and density

When a spaceship travels from Earth to the Moon, what happens to the gravitational forces acting on it?

• It continuously feels Earth's gravity until it lands on the Moon.

• It feels Earth's gravity less as it moves away, and the Moon's gravity more as it gets closer.

• It experiences no gravity in the space between Earth and the Moon.

• It is pulled equally by both Earth and Moon throughout the journey.

Why do objects appear to fall at different rates on Earth, even though gravity pulls on all objects equally?

• Heavier objects are naturally pulled faster by gravity.

• The Earth's rotation affects falling objects differently.

• Air resistance pushes against falling objects, affecting their speed.

• Lighter objects have less mass, so gravity has a weaker effect.