Force & Gravity
What is a force?
A push or a pull.
What force causes a dropped ball to fall to the ground?
Gravity.
True or False: There is no gravity in space.
False
Which has stronger gravity: Earth or the Moon?
Earth.
What is at the center of our solar system?
The Sun.
Gravity is what type of force?
A pulling force.
If you throw a ball into the air, what eventually causes it to come back down?
Gravity
Why do astronauts appear to float inside a space station?
They are continuously falling while orbiting Earth.
Why would you weigh less on the Moon?
The Moon has weaker gravity than Earth.
What force helps keep planets in orbit around the Sun?
The Sun's gravity.
What direction does Earth's gravity pull objects?
Toward the center of Earth.
A bowling ball and tennis ball are dropped from the same height at the same time. If air resistance is ignored, what happens?
They hit the ground at about the same time.
What force helps keep the Moon moving around Earth?
Gravity
Why could an astronaut jump higher on the Moon?
The Moon's weaker gravity pulls the astronaut downward less strongly.
What does it mean when a planet revolves around the Sun?
It travels around the Sun.
What does it mean when we say gravity is an attractive force?
It pulls objects toward each other.
Why does a feather usually fall more slowly than a rock on Earth?
Air resistance slows the feather more.
What is an orbit?
The curved path an object follows as it travels around another object.
Two students are standing on opposite sides of Earth. In which direction does gravity pull each student?
Toward the center of Earth.
Earth takes about how long to complete one revolution around the Sun?
About 365 days, or one year.
Explain how gravity can affect an object's motion.
Gravity can pull an object downward, slow it as it moves upward, and cause it to fall back toward Earth.
Put these stages in order: falling, moving upward, highest point.
Moving upward → highest point → falling.
Explain how an object can keep moving around Earth instead of falling straight down.
The object moves forward while gravity pulls it toward Earth, creating an orbit. (gravitational pull from earth and forward motion of object)
If you moved farther away from Earth, what would happen to Earth's gravitational pull?
It would become weaker.
Explain how gravity and motion work together to keep planets in orbit around the Sun.
A planet moves forward through space while the Sun's gravity pulls it inward, creating a curved path called an orbit.