Meliora (1.7) 1

Name: ______________________________

Class: _______________________________

Activator: 1.7 – Force, Mass, and Acceleration Date: _______________________________

Complete assignment “Act. 1.7 – Acceleration” on CK-12. You can use the box below to take any notes you want to take.

Meliora (1.7) 2

Name: ______________________________

Class: _______________________________

Exit Ticket: 1.7 – Force, Mass, and Acceleration Date: _______________________________

On a scale of 1 to 10, how well did you understand the material in today’s class? Write your answer in the box to the right. (1=I understood nothing at all, 10=I understand the material so well I could teach it tomorrow)

Is there anything you want Mr. Buresh to know?

Meliora (1.7) 3

Name: ______________________________

Class: _______________________________

Classwork: 1.7 – Force, Mass, and Acceleration Date: _______________________________

OBJECTIVE: IWBAT describe how different types of graphs can be used to describe motion by creating graphs

that represent motion in given scenarios.

Pre-Investigation Discussion

Have any of you ever seen someone or been in a situation when your car got a flat tire and you had to get help to push it to the side of the road? How is it possible to move something with so much mass?

Have you ever tried to move something and had difficulty? Why was it difficult?

What if we had two bricks at rest on the table. Think of one as a regular brick and the second one as a foam brick. Then we created an unbalanced force by lifting one side of the table. Predict what would happen to the motion of the two bricks.

Newton’s laws are used to describe motion. In order to describe motion completely, we use standard measurements units. These units are internationally accepted and commonly referred to as SI units, from the French Systeme International Measurements for mass, force and acceleration (distance and time) are needed to describe motion. What are the SI units used to describe these measurements?

Another requirement for describing motion is a frame of reference. For almost all situations, Earth is used as a frame of reference. For example, the speed of a bus is compared to a non-moving object like a tree on Earth instead of the Sun, a train that is also moving, or a seat in the bus itself. People in different positions, like a starting line judge and finish line judge, see the motion of a race based on differences in their frames of reference. In science, it is important to establish a frame of reference as well as a reference point. The stationary spot from which you are doing the measurement is called a reference point. Motion is described as a change in position compared to a reference point. Competitive events could not take place without a reference point. What is the reference point for a race?

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In your own words, describe a frame of reference:

Read and annotate the following text:

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Scientific Question:

How do mass and force affect an object’s acceleration?

Variables:

Independent Variables (what are we going to change in the experiment):

Dependent Variable (what are we going to measure in the experiment):

Control Variables/Constants (Things that stay the same):

Hypothesis:

If _______________________________________________________________________

_________________________________________________________________________

________________________________________________________________________,

then _____________________________________________________________________

_________________________________________________________________________

because __________________________________________________________________

________________________________________________________________________.

Materials:

Toy car

String

Binder clip

Masking tape

.5 N bag of sand

1 N bag of sand

1.5 N bag of sand

50 g bag of clay

100 g bag of clay

Procedure Part 1 – Effect of Mass on Acceleration:

Step 1

Step 2

Step 3

Step 4

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Step 5

Step 6

Step 7

Step 8

Procedure Part 2 – Effect of Force on Acceleration:

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

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Data:

Conclusions: What conclusions can you make about how mass and force affect acceleration based off your data?

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Post-Investigation Discussion

What frame of reference and point of reference for the trials of the investigation were established by your group?

What would be required if you wanted to use other units of measurement for this investigation?

Think back to the question we discussed before the investigation about the regular brick and the foam brick. How could you use the bricks at rest on the table to design an investigation to provide evidence that changes in motion depend on the mass of the object and the net force on the object?

Meliora (1.7) 9

Name: ______________________________

Class: _______________________________

Writing: 1.7 – Force, Mass, and Acceleration Date: _______________________________

OBJECTIVE: IWBAT explain the relationship between mass, force, and acceleration by planning and conducting

an investigation.

CLAIM

Statement about the results of an

investigation.

A one-sentence answer to the question you investigated.

It answers, what can you conclude?

It should not start with yes or no.

It should describe the relationship between dependent and independent variables

EVIDENCE

Scientific data used to support

the claim.

Evidence must be:

o Sufficient – Use enough evidence to support the claim.

o Appropriate – Use data that support your claim. Leave out information

that doesn’t support the claim.

o Qualitative (using the senses), or Qualitative (numerical), or a combination

of both.

REASONING

Ties together the claim and the

evidence.

Shows how or why the data count as evidence to support the claim.

Provides the justification for why this evidence is important to this claim.

Includes one or more scientific principles that are important to the claim and

evidence.

What are some scientific principles that relate to the investigation you conducted?

Meliora (1.7) 10

1. How does the mass of an object affect the acceleration?

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Points Awarded 2 1 0

Claim Answered the question and was accurate based on the data.

Answered the question inaccurately, or the answer was not based on data.

No claim, or did not answer the question.

Evidence Cited data and patterns within the data. Used labels accurately.

Cited data from the data source but not within the context of the prompt.

No evidence, or cited changes, but did not use data from the data source.

Reasoning Cited the scientifically accurate reason using correct vocabulary, and connected this to the claim. Showed an accurate understanding of the concept.

Cited a reason, but it was inaccurate or did not support the claim. Reasoning did not use scientific terminology or used it inaccurately.

No reasoning, or restated the claim, but offered no reasoning.

Meliora (1.7) 11

2. How does the force applied on an object affect the acceleration?

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Points Awarded 2 1 0

Claim Answered the question and was accurate based on the data.

Answered the question inaccurately, or the answer was not based on data.

No claim, or did not answer the question.

Evidence Cited data and patterns within the data. Used labels accurately.

Cited data from the data source but not within the context of the prompt.

No evidence, or cited changes, but did not use data from the data source.

Reasoning Cited the scientifically accurate reason using correct vocabulary, and connected this to the claim. Showed an accurate understanding of the concept.

Cited a reason, but it was inaccurate or did not support the claim. Reasoning did not use scientific terminology or used it inaccurately.

No reasoning, or restated the claim, but offered no reasoning.

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3. Using the data of an experiment below, explain how an object’s mass affect the force of an object.

Trial Mass Acceleration Force

1 2 kg 10 m/s2 20 N

2 5 kg 10 m/s2 50 N

3 8 kg 10 m/s2 80 N

4 10 kg 10 m/s2 100 N

5 15 kg 10 m/s2 150 N

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ _____________________________________________________________

Points Awarded 2 1 0

Claim Answered the question and was accurate based on the data.

Answered the question inaccurately, or the answer was not based on data.

No claim, or did not answer the question.

Evidence Cited data and patterns within the data. Used labels accurately.

Cited data from the data source but not within the context of the prompt.

No evidence, or cited changes, but did not use data from the data source.

Reasoning Cited the scientifically accurate reason using correct vocabulary, and connected this to the claim. Showed an accurate understanding of the concept.

Cited a reason, but it was inaccurate or did not support the claim. Reasoning did not use scientific terminology or used it inaccurately.

No reasoning, or restated the claim, but offered no reasoning.