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Force and Motion Review

Force and Motion Review

Assessment

Presentation

Science

5th Grade

Medium

NGSS
3-PS2-1, 3-PS2-2, MS-PS2-1

+6

Standards-aligned

Created by

Charles Bullins

Used 207+ times

FREE Resource

39 Slides • 18 Questions

1

Force and Motion Review

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Forces

  • Forces can stop - pushing, pulling, friction, gravity

  • Change Directions- think about hitting a baseball.

  • Change from potential to Kinetic (moving)

3

Multiple Choice

Forces can cause objects to

1

stop moving only.

2

start moving only.

3

start moving, change direction, or stop moving.

4

change direction only.

4

Newton's Laws

  • 1st Law- Objects in motion will stay in motion; objects at rest will stay rest.

  • 2nd Law- More mass needs more force/ more force = more acceleration.

  • 3rd Law - For every action, there is an equal and opposite reaction.

5

Multiple Choice

According to Newton's third law of motion, when a hammer strikes and exerts force on a nail, the nail

1

disappears into the wood.

2

exerts an equal force back on the hammer.

3

creates a friction with the hammer.

6

Multiple Choice

Jasmyn can run 50 yards in 10 seconds and Jaylah can run 100 yards in 20 seconds. Who has a faster speed? (Remember speed equals distance divided by time.)

1

They both have the same speed.

2

Jasmyn

3

Jaylah

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Friction

One surface or object rubbing against another.

High Friction surface examples: Sandpaper, Grass, Carpet, rough surface

Low Friction- Hardwood floors, ice, smooth surfaces

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Multiple Choice

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Four boxes are lifted straight up from the ground to a shelf. Each box has a different mass, as shown in the table. Which box requires the smallest force to lift it off the ground?

1

L

2

M

3

N

4

O

13

What is motion?

Motion is when an object moves.


Can you show me motion right now?

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What is gravity?

Gravity is a force that pulls objects together.

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Who was Isaac Newton?

He was a scientist who studied gravity and motion.

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Review

  • Force=Push or pull

  • Push=Moves things away

  • Pull=Moves things closer or picking something up

  • Balanced force=Equal and opposite directions. NO MOTION!

  • Unbalanced force=2 or more forces where one force is stronger. MOTION!

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19

Review

  • Gravity=A force that pulls an object towards another object

  • Mass=Not affected by gravity. Always stays the same.

  • Weight=Changes based on where it is located

  • Friction=The force that slows down an object that is rubbing on a surface

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20

Multiple Choice

What is a PUSH or PULL of an object?
1
Motion
2
Force
3
Friction
4
Gravity

21

Multiple Choice

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Which requires more force to move it?

1

A heavy object, like a bowling ball.

2

A light object, like a tennis ball

22

Multiple Choice

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When you pick things up, you're _______.

1

pushing

2

pulling

23

Multiple Choice

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A pull moves things _______ .

1

Close to you

2

Away from you

24

Multiple Choice

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A push moves things _______ .

1

Close to you

2

Away from you

25

Multiple Choice

Imagine you kick four balls with the same amount of force. Which one will go the farthest?

1

a 3 pound ball

2

a 5 pound ball

3

a 15 pound ball

4

a 25 pound ball

26

Multiple Choice

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Why is it harder for the boy in Image B to get down the hill?
1
Motion
2
Friction
3
Work
4
Displacement

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Forces and Motion

  • Force-any push or pull on an object. Example: You use force to push a ball and make it roll across the field.

  • Motion-when an object is moving it is in motion.

28

Multiple Choice

Which of the following is an example of a force?

1

Kicking a soccer ball with your foot.

2

Pulling a wagon to make it roll.

3

Both are examples of a force.

29

Friction

Friction-a force that slows objects down, when two objects rub together. Example: When you hit the brakes in a car, the friction from the tire causes you to stop moving or slow down.

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Inertia

When traveling in a train or any other vehicle, have you noticed how you continue to move forward when it stops. You just experienced INERTIA! Inertia is the tendency of a body to resist a change in motion or rest. When a vehicle stops, you tend to jerk forward before coming to a complete stop. In the same way, you will jerk backwards when the vehicle begins to move.


The phenomenon occurs because of Newton’s First Law of Motion: An object at rest (or motion ) will continue to be in the same state unless acted upon by an external force. Which means objects tend to “keep on doing what they’re doing,” unless disturbed.

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Multiple Choice

Why does the seatbelt stop you from going into the windshield of your car?

1

Inertia

2

Velocity

3

Condensation

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Balanced and Unbalanced Forces


Newton's Second Law of Motionwhen an unbalanced force acts on an object, the object's acceleration equals the force divided by the object's mass.

Acceleration Formula: acceleration = force / mass

Balanced Forces: forces that cancel each other out when acting together on a single object 

Unbalanced Forces forces that do not cancel each other out when acting together on a single object 

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Action=Reaction

Newton's Third Law: for every action, there is an equal and opposite reaction


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Remember:

  • Motion is a change in position measured by distance and time.

  • Speed tells us the rate at which an object moves.

  • Velocity tells the speed and direction of a moving object.

  • Acceleration tells us the rate speed or direction changes.

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Distance - Time Graphs

Let's take a look!

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If an object is not moving, a horizontal line is shown on a distance-time graph.  

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If an object is moving at a constant speed, it means it has the same increase in distance in a given time.

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Let’s look at two moving objects: Both of the lines in the graph show that each object moved the same distance, but the steeper dashed line got there before the other one.

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Graphs that show acceleration look different from those that show constant speed.  

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Summary

  • A distance-time graph tells us how far an object has moved with time.

  • The steeper the graph, the faster the motion.

  • A horizontal line means the object is not changing its position - it is not moving, it is at rest.

  • A downward sloping line means the object is returning to the start. 

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Multiple Choice

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In which of the following graphs below are both runners moving at the same speed? *Look at which graph is which. They are labeled A, B, D, C.*

1

Graph A

2

Graph B

3

Graph D

4

Graph C

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Speed - Time Graphs

Speed-Time graphs are also called Velocity-Time graphs.  

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Summary

  • A speed - time graph shows us how the speed of a moving object changes with time.

  • The steeper the graph, the greater the acceleration.

  • A horizontal line means the object is moving at a constant speed.

  • A downward sloping line means the object is slowing down. 

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Multiple Choice

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Which runner stopped for a rest?

1

Albert

2

Bob

3

Charlie

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Multiple Choice

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Look at the graph above. It shows how three runners ran a 100-meter race. Which runner won the race?

1

Albert

2

Bob

3

Charlie

56

Multiple Choice

When an object is not moving, it is referred to as:

1

acceleration

2

deceleration

3

at rest

4

constant speed

57

Multiple Choice

The time can be found on:

1

the x-axis

2

the y-axis

Force and Motion Review

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