Physics II Day 1: Gravity
Energy and force are the same thing! We don’t need this unit! |
Not
really… now we’ve got FORCE to learn about.
1. What?
- ENERGY is the ability________to make something move or change.
- A FORCE is that push or a pull________that makes something move or change.
- Gravity is considered a pull force.
- Who is this handsome fellow? Issac Newton.
2. What Force Can
Do
·
Make something start movin___________
·
Make something stop moving__________
·
Make something go faster or slower___
·
Make something change direction_____
·
Make something change shape_________
3.
How?
The formula for calculating a force on an object is f =
m x a
F = force
m = mass
a = acceleration
Gravity
·
Gravity is considered
a pull force.
Who’s
this handsome fellow? Issac Newton
·
Gravity is a force of attraction
that exists between any two masses.
·
It just so happens that dense
things have more gravity.
What’s the largest thing that we are close to? The Moon.
That is why objects are pulled towards the earth.
What’s the largest thing that we are close to? The Moon.
That is why objects are pulled towards the earth.
Quest #1: Watch the Brainpop Video: Gravity here and then define the following words:
- Gravity
- Force
- Mass
- Weight
- Acceleration
AIM
Writing Connection
Today’s
AIM is KWBAT analyze gravity as a pull force, calculated by multiplying mass
and acceleration. Citing evidence from the movie, please explain in 3-5
sentences how this movie relates to this AIM, using the above words:
Quest #2: Complete the Virtual Lab – Investigating the relationship
between Mass, Acceleration, and Force here.
Quest #3: Create an Edmodo account by clicking here.
Quest #3: Create an Edmodo account by clicking here.
Unit 4 Physics II Day 1 Lifework
Read
the article below and make three text-to-self connections. Begin these
connections with the words: “This reminds me...” Then answer the questions.
Force and Motion By Sharon Fabian |
1 Force
and motion describe everyday things that are happening all the time.
Hundreds of times every day, you use force and motion. Did you just pick up a
pencil? -- force and motion. Did you turn a page? -- force and motion. Raise
your hand? Kick the desk in front of you? Pack your backpack? All of these are
examples of force and motion.
2 Out
on the playground you can see even bigger and better examples of force and
motion. Climbing, jumping, running, chasing, throwing, and sliding all use
force and motion.
3 Force
and motion are also parts of a complicated branch of science, called physics.
Now that you know what force and motion are, the next thing that you should
know are some definitions.
4 The
scientific definition of force is a push or a pull. When you throw a
baseball, you are pushing it through the air. When you pick up a baseball bat
you are pulling it up from the ground. When you hit the ball, you use both
pushing and pulling motions.
5 Motion
is another word with a scientific meaning. Motion means moving something
from one place to another. When you used force to swing the bat and hit the
baseball, they both moved from one place to another. That's what motion is. In
fact, the word motion is a form of the word move.
6 Let's
stick with our baseball example for a little bit longer. Some kids can hit a
baseball harder than others can. You could say that their baseball travels at a
faster rate. Speed is a scientific term that means the rate of motion,
or how fast something travels.
7 OK,
enough about baseball. Now think about rocks. Why can you throw a little pebble
farther than you can throw a huge boulder? The boulder is heavier; it has more
weight.
8 The
Earth's gravity causes everything on Earth to have weight. Gravity is a
force that pulls everything toward the center of the Earth. Gravity is holding
both the pebble and the boulder down, at the same time that you are trying to
throw them. Gravity is a force acting against your force. Gravity's force is
stronger on heavier objects. That's why it is not too hard to throw the pebble,
but very hard to throw the boulder. Weight is the measure of gravity's
force. Since gravity is holding the boulder with more force than the pebble,
the boulder has more weight.
9 Force,
motion, speed, gravity, and weight -- everyday words with special meanings in
the science called physics.
Three text-to self
connections (underline them in the text):
1)_______________________________________________________________________________
2)_______________________________________________________________________________
3)_______________________________________________________________________________
Questions
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