Download Gravity Notes 2

Name: ___________________________________________
Period: _______
Gravity
Gravity is a _____________ of ___________ between objects
that have mass.
Gravity between objects depend on:
- The _______ of the objects.
- The ____________ between the objects.
- The __________the mass, the ________ gravitational pull the
object has. Even a tiny dust particle has gravity. Do you have
gravity?
- Which has more gravity, you or the earth? Why?
- If you were an astronaut and you go farther into space, why
do you become weightless?
Mass vs. Weight
Mass
Mass is the amount of ____________ in an object.
Mass is measured in ____________.
To measure the mass of an object, you would use a ______________.
What does it mean when both sides of the balance are level?
Weight
Weight is the measure of the _____________ of ______________ on an
object.
Weight is measured in _____________.
When an object falls to the ground, it accelerates, or gets faster as it falls.
This is called the_________________________. It is a number that
__________changes if you are on Earth. It is a CONSTANT. It is
____________.
Summary:
As a space ship travels to the moon, what could you say about the mass
and the weight of the space ship? Explain your answer.
Rank the planets and the sun order of their strongest gravitational force.
Why did you rank them that way? (Hint: Think about how big they are)
Name______________________________Period___________
How are mass and weight related?
An object with ________mass is pulled by gravity with greater
force, so mass and weight are closely related. However, the
_________of an object can change if the _________changes, even
while the mass of the object remains constant. An astronaut’s
_______does not change. He or she has the same amount of
_________on the moon as he or she has on Earth. An astronaut
___________ __________on the moon than on Earth because the
moon’s gravity is weaker than the Earth’s gravity.
Why is the moon’s gravity weaker than the Earth’s gravity?
I say “mass” you say “matter.
Measured by a balance.
I say “weight” you say “gravity”.
Measured by a spring scale.
Gravity
What is Gravity?
Gravity is a measure of attraction between objects that have
mass.
Gravity between objects depend on:
- The _______ of the objects.
- The _______ between the objects.
- The Larger the mass, the more gravitational pull the object
has. Even a tiny dust particle has gravity. Do you have
gravity? Which has more gravity, you or the earth? Why?
If you were an astronaut and you go farther into space, why do
you become weightless? Because the distance between you and
the earth increases the force of gravity between you and the
earth decreases. An object with more mass is pulled by gravity
with greater force, so mass and weight are closely related.
However, the weight of an object can change if the gravity
changes, even while the mass of the object remains constant. An
astronaut’s mass does not change. He or she has the same
amount of matter on the moon as he or she has on Earth. An
astronaut weighs less on the moon than on Earth because the
moon’s gravity is weaker than the Earth’s gravity. Why?