scientific method bellringer

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Scientific Method Bellringer 1. What is mass? 2. What is weight? 3. What is the scientific method? After you define, list all the parts you remember below your answer.

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Scientific Method Bellringer. What is mass? What is weight? What is the scientific method? After you define, list all the parts you remember below your answer. What is the scientific method?. - PowerPoint PPT Presentation

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Page 1: Scientific Method  Bellringer

Scientific Method Bellringer

1. What is mass?2. What is weight?3. What is the scientific

method?› After you define, list all the

parts you remember below your answer.

Page 2: Scientific Method  Bellringer

What is the scientific method?

The scientific method is a systematic way to answer questions. It’s the process we go through as scientists to answer questions about the world around us!

You go through the scientific method everyday without even thinking about it!

Page 3: Scientific Method  Bellringer

The steps of the scientific method are…

Observe and State the Problem Make a hypothesis Test your hypothesis through an

experiment. Record and analyze data. Draw conclusions and

communicate results.

Page 4: Scientific Method  Bellringer

Brain Pop: Scientific Method(During this video, we will fill in the

scientific method graphic organizer)

Page 5: Scientific Method  Bellringer

Today, we are going to talk about the main parts of a good experiment…

Hint: It’s not blowing up our classroom!

Page 6: Scientific Method  Bellringer

Think about this… Let’s say that Brad has a pimple. He

wonders what will get rid of it. He’s heard that putting toothpaste on the zit will get rid of it. He’s also heard that lemon juice will get rid of it. He decides to rub his face with lemon juice and toothpaste. The next morning his pimple is gone. But which thing cured him? The toothpaste or the lemon juice?

Page 7: Scientific Method  Bellringer

The Answer? How many of you think it was the

toothpaste? Raise your hand. How many of you think it was the

lemon juice? Raise your hand. The truth is….

THERE IS NO WAY FOR YOU TO KNOW FOR SURE BECAUSE THIS IS A BAD

EXPERIMENT!!!

Page 8: Scientific Method  Bellringer

Every Good Experiment Has Three Things!

1) Independent variables2) Controls3) Dependent variable

So What Are These?

Page 9: Scientific Method  Bellringer

IDENTIFYING VARIABLES

Page 10: Scientific Method  Bellringer

What is a variable?

Variable: A factor that can change in an experiment. Every experiment has two – one is the cause, the other is the effect.

Page 11: Scientific Method  Bellringer

Cause and Effect Does crushing a sugar cube effect the

rate at which the sugar dissolves in the water?

What is the cause and what is the effect?

Page 12: Scientific Method  Bellringer

Crushing the sugar cube will

effect how long

it takes to

dissolve.

Crushing the sugar cube is what we predict will be the

cause.We change this one!

The time it takes to dissolve is what we

will see the effect on.

We measure this one!

This is called the Independent Variable.

This is called the Dependent Variable.

Page 13: Scientific Method  Bellringer

Variables: Independent Variable is the cause, the

one we will change.

Dependent Variable is the effect, the one we will measure.

Page 14: Scientific Method  Bellringer

Experiment Title: Does the age of a person gets married effect their chances of getting a divorce?

Experiment Title: Does fertilizer affect plant height?

Experiment Title: Is there are relationship between the weather and how students behave?

IV- DV-

IV- DV-

IV- DV-

Age Chances of divorce

fertilizer

weather

Plant height

behavior

Page 15: Scientific Method  Bellringer

Check for Understanding Does brushing your hair make it grow

faster?1) Identify the independent variable.2) Identify the dependent variable

Page 16: Scientific Method  Bellringer

Check for Understanding Do car accidents increase your car

insurance cost?1) Identify the independent variable.2) Identify the dependent variable.

Page 17: Scientific Method  Bellringer

Any variable we keep the same in order to make sure it isn’t what’s causing the effect.

CONSTANT

Page 18: Scientific Method  Bellringer

What were the constants in Tim and Moby’s experiment?

Page 19: Scientific Method  Bellringer

Control Group A control group is a group that is not

treated. For example, if I gave some of you raffle tickets but not everyone…who is my control group?

What was the control group in Tim and Moby’s experiments?

Page 20: Scientific Method  Bellringer

Practice with Controls Does fertilizer affect plant height?

› Independent Variable: fertilizer› Dependent Variable: plant heightHow can we be sure that the fertilizer is

effecting the plant height?What would some constants be? We must have a control to make sure that the

fertilizer is the only factor affecting plant height.

› Control: Plant that does not receive fertilizer.

Page 21: Scientific Method  Bellringer

Practice with Controls Does the temperature outside effect

the chances a person will get the flu?-IV: Temperature outside-DV: Chances a person will get the flu-Control: Person

Page 22: Scientific Method  Bellringer

Check for Understanding What effect does a car’s speed have on

gas mileage?1) Identify the control.

Page 23: Scientific Method  Bellringer

Check for Understanding Does adding salt to water affect the

temperature at which it boils?1) Identify the control.

Page 24: Scientific Method  Bellringer

Simpsons Worksheet 20 minutes

First two with me, Last three with partner

Whisper!

Page 25: Scientific Method  Bellringer

Instant Snow! We will work this out together to figure

out which liquid makes the fluffiest snow!

Page 26: Scientific Method  Bellringer

Spongebob Worksheet Independent Practice