Investigating Forces

​OBJ:

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I will  be able to design experimental investigations.

​DOL:

Given 5 questions, I will analyze experimental investigations of forces by combining knowledge of forces and identifying the variables. Answering with 100% accuracy.

​Turn and Talk+WA-
Milana pushed a box across a floor but it did not move. Her friend helped her push it, and began to move. Why is this a force?

Open Ended

Turn and Talk +

Explain how you know the correct answer.

​An experiment is a scientific process used to find answers to specific questions. In an experiment, scientists test only one variable at a time to see how it affects the results. Everything else in the experiment must be kept the same to ensure the test is fair and accurate. By repeating the experiment the same way every time, scientists can trust their results.

​Response Card-
Why is it important to keep everything except for the peeled or unpeeled orange the same when testing if the orange will float or sink?

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In science experiments, we often use independent variables (IV) and dependent variables (DV) to help us test and learn new things. Let’s use an example with plants to explain this clearly.

The independent variable is the one thing you choose to change in an experiment. For example, if you want to see how different amounts of water affect the growth of a plant, the amount of water you give to each plant is the independent variable. You decide how much water each plant gets.

The dependent variable is what you measure or observe to see if it changes because of what you did. In this case, you would measure how tall each plant grows or how healthy it looks. The growth of the plant is the dependent variable because it depends on how much water you gave it.

So, in this experiment:

• Independent Variable (IV): The amount of water given to the plants.

• Dependent Variable (DV): The growth or health of the plants.

By changing only the amount of water (IV) and keeping other things like sunlight and soil the same, you can see how the amount of water affects the plant’s growth (DV).

​SCR-What is the difference between IV and DV?

Multiple Choice

If we change how much sunlight a plant gets, what is the independent variable? WHY?

• Sunlight

• Water

• Soil

Multiple Choice

What would be the dependent variable we measure?

• Amount of sunlight

• Amount of water

• Amount of growth

​Turn and Talk-

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Response Card

“Does studying improve
test scores?”

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1. Identify the variable

Independent, dependent

2. Identify the controls
   
   

3. Design an experiment to answer this question.

​Response Card-

Identify the variable: IV & DV

Mr. Krabs thinks he can increase sales if Squidward plays music while customers eat at the Krusty Krab.

Multiple Choice

Identify the independent variable.

• Green car

• Angle or slope

• Behavior

• Type of car

​You make paper airplanes from different types of paper to see which one flies the farthest.


Response Card-

Independent Variable(IV):

Dependent Variable (DV):

​Scenario: You want to see how temperature affects the size of an inflated balloon.

Response Card-

• Independent Variable (IV):

• Dependent Variable (DV):

Multiple Choice

First take white board and list IV and DV

Second, Answer!

• A

• B

• C

• D

​Response Card+WA-

Develop your own experiment to test the effect of a force on an object.

Hint: start with a question about a force, then choose the appropriate variable to test.

​DOL TIME

SHHHHH,


WORK LIKE A CHAMPION!!!