WHAT KEEPS US DOWN TO EARTH,
GRAVITY
P. Barnett

TABLE OF CONTENTS
What factors affect the
gravitational force
between objects?
GRAVITY
What is it?
IMPORTANCE
Why do we need it?
FACTORS AFFECTING MASS AFFECTS
How does mass affect the
gravity between objects?
01 02
04
03

GRAVITY
What is it?
01

Gravity is “the force that attracts a body toward the
center of the earth, or toward any other physical body
having mass.”
Gravity is what keeps up down on the ground, and is what
makes things fall. It’s a physical force that brings us to
towards the center of the earth. When you stand up, you
are pushing against the ground, and it’s pushing back
with equal force, making you stand up.
WHAT IS GRAVITY?

IMPORTANCE OF
GRAVITY
02
Why do we need it?

WHY DO WE NEED IT?
MOTION
It keeps us from
floating away, and
defines the way we
move.
PLANETS
It’s what makes the
planet orbit the sun,
and then moon orbit
Earth.
ATMOSPHERE
Gravity holds down our
atmosphere, keeping
what we breath in our
planet.

FACTORS
AFFECTING GRAVITY
03
What factors affect the gravitational force
between objects?

WHAT AFFECTS GRAVITY BETWEEN OBJECTS?
MASS
When the mass
increases, the
gravity increases
as well.
DISTANCE
When the distance
between 2 objects
increases, the
gravity decreases.

HOW MASS
AFFECTS GRAVITY
04 How does mass affect the gravity
between objects?

HOW DOES MASS AFFECT GRAVITY
BETWEEN OBJECTS?
There are 2 planets orbiting each
other, as time passes, object 1 grows
in mass. This causes the gravitational
force between the objects to increase.
They both increase overtime, which
increases the gravitational force even
more.

SUMMARY
05

SUMMARY
Gravity is very important for us, and the whole solar
system. It’s what keeps us at a steady distance from the
sun, keeps our atmosphere attached, and the moon
orbiting us. It holds us down to the surface of the Earth,
keeping us from floating away.
When mass increases, gravity’s force increases.
When distance increases, gravity’s force decreases.

“Why do mass and distance affect gravity?” Why do mass and distance affect gravity?,
https://www.qrg.northwestern.edu/projects/vss/docs/space-environment/3-mass-and-
distance-affects-gravity.html. Accessed 20 January 2023.
Woodhouse, Emma. “Two Factors That Affect How Much Gravity Is on an Object.” Sciencing, 8
December 2020, https://sciencing.com/two-affect-much-gravity-object-8612876.html.
Accessed 20 January 2023.
CITATIONS