Unit 3 - Lesson 1 - Push or Pull

Presentation

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Science

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5th Grade

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Practice Problem

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Medium

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NGSS

3-PS2-1, 3-ESS3-1, 5-ESS2-1

+16

Standards-aligned

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Used 13+ times

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20 Slides • 22 Questions

Science - Unit 3 – Lesson 1

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0-No Talking

Raise Hand - Ask

the Teacher

Morning Activity

Stay in Seat

Write Target, Prepare

for Class, Read

Target is written,

planner put away, and

ready to learn

I will learn that force is a
push or pull that can change
the position of an object.

Sir Isaac Newton

(1643 - 1727) an English
mathematician, physicist,
astronomer, theologian, and
author who is widely recognized
as one of the most influential
scientists of all time. He is
famous for his contemplations of
the force of gravity.

Famous Scientist

Lesson 1

Unit 3 – Investigating Forces

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Objectives

01Target

I will explore that force is a push or a pull that
can change the position or motion of an object.

02Success Criteria

I know I have it when I can identify if a
force being applied is a push or a pull.

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Pre-Assessment

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Multiple Choice

Students are investigating how mass affects the force needed to move an object. The attached a wooden block to a spring scale, a 10g mass on top of the block and pulled it 50cm across the table. Which of the following describes the next step to take?

Pull the spring scale a longer distance

Cover the table top with a carpet square

Repeat the same steps using a heavier mass

Attach a smaller block to the spring scale

Multiple Choice

A group of students wanted to compare the distances a toy car travels after leaving ramps of different heights. What tool would provide the most useful information for their comparison?

Stop watch

Pan Balance

Hand Lens

Meter Stick

Multiple Choice

Students are investigating motion with a rubber band car. They want to know how the number of winds of the rubber band affects how the car moves. They will record the number of winds of the rubber band. What other data will they need to collect?

The distance the care travels when released

The length of the rubber band during each trial

The amount of time it takes to wind the propeller

The width of the surface on which the car moves

Multiple Choice

A group of students collected the following data by pulling a toy car back different distances and then release it. According to the data, the distance the toy car traveled increased as the -

mass of the car decreased

start pull-back point increased

temperature in the classroom increased

surface on which the car rolled was changed

Multiple Choice

Students create balloon rockets by taping drinking straws to balloons and running a thick string through the straw. The ends of the string are held tightly apart. When the ballon is inflated and released, it moves along the string.

What should the student do to change the amount of friction that shows the motion of the balloon rocket?

mass of the car decreased

start pull-back point increased

temperature in the classroom increased

surface on which the car rolled was changed

Forces

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Force is …

1. A push or a pull on an object
2. Able to cause an object to start moving, stop moving,
or change direction
3. Some forces are small and some are very large.

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Force is …

1. Forces must be applied to an object for it to move

Examples are: gravity, friction, and magnetism.

2. Friction is what slows motion.

3. Gravity pulls object closer to the Earth’s surface.

Friction is greater on rough surfaces.
Friction also causes heat.

Gravitational force depends on the object’s
Mass.

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Push or Pull

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The act of applying force
to move something
toward or with you

The act of applying force

in order to move
something away

Push

Pull

Push

When you push something, you move it away from you.

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Pull

When you pull something, you move it towards you.

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Gravity

A force by which a planet or other body draws objects
towards its center.

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The Leaning Tower of Pisa

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What force is acting upon the Leaning Tower of Pisa?

Open Ended

What forces are acting upon the Leaning Tower of Pisa?

Type response here

Gravity

1. Look at the crumpled piece of paper and plastic ball on your desk.

2. Think about if you were to hold them both 1 meter off of the floor and then drop them at the same time.

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Hypothesis

A hypothesis is an educated guess to the outcome of a question or investigation.

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A hypothesis is written in an IF - THEN format.

An example is...
IF I drop a plastic ball and a crumpled piece of paper THEN the _____ would drop faster than the _______ because .....

Open Ended

If you each held one of the objects one meter off of the floor, what do you think will happen? (Write an hypothesis)

Type response here

Gravity

Now two people from your group hold each of the objects one meter off of the floor and drop them at the exact same time.

The others in the group make observations.

WHAT HAPPENED?

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Open Ended

Based on the activity you just completed, describe what happened to the crumpled paper in contrast to what happened to the ball.

Type response here

Multiple Choice

You just completed an activity in the classroom. The teacher provided the mass of the ball and a crumpled piece of paper. You and your partner then held both objects at a height of 1 meter above the floor. You both dropped the items at the same time. Which answer choice would be a testable hypothesis for this experiment?

If the ball and paper are dropped at the same height, then the baseball will fall fast.

Will the baseball or the paper fall faster.

The ball bounced after hitting the table.

The baseball and the paper have different masses.