Scientific Method Lesson and Practice

Scientific Method

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Multiple Choice

If John was wanted to see what color of light plants grow under the best which of these would be a variable in the experiment.

• The type of plant

• Height of the plant

• Color of the light the plant is in

• How much water you give it

• All of these answers

Multiple Choice

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

Multiple Choice

If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?

• True
• How fast you get to school
• Riding a bike or walking
• False

Multiple Choice

If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?

• increase the amount of iron in your blood
• spinach you eat

Multiple Choice

Dependent variable means

• the scientist controls what to test
• educated guess
• ask a question
• what is being measured

Multiple Choice

What is a factor that the experimenter has full control over and changes to see what happens?

• Dependent Variable
• Independent Variable
• Control group 
• Hypothesis

Multiple Choice

What is a factor that changes because of what the experimenter does?

• Dependent Variable
• Independent Variable
• Control Group
• Hypothesis

Multiple Choice

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Multiple Choice

These are variables that are kept the same throughout all experimental groups to prevent error in the experiment.

• Independent Variable

• Dependent Variable

• Controlled Variable

• Varying Variable

Multiple Choice

The data collected supports which of the following questions that Squidward could have tested?

• Which song does the audience prefer?
• Which instrument does the audience like best?
• Which reed length creates the best sound?
• How do applause affect performance?

Multiple Choice

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the dependent variable?

• The Song
• The Reed
• The Applause

Multiple Choice

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the independent variable?

• The Song
• The Reed
• The Applause

Multiple Choice

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was controlled?

• The Song
• The Reed
• The Applause

Multiple Choice

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

Multiple Choice

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

• Type of plant, amount of music, and sunlight
• Water, apple juice, milk
• Plant growth

The Scientific Method

Practice Scenarios

Al’s salt water experiment

Al wonders if adding salt to water will affect how long it takes the water to freeze. He thinks that salt water will freeze more quickly than fresh water. He decides to check his hypothesis by conducting an experiment.

Multiple Choice

What would be the Independent Variable in Al´s experiment?

• The time it takes the water to freeze

• The type of water

• The container the water is placed in

• The amount of water

Multiple Choice

What would be the Dependent Variable in Al´s experiment?

• The time it takes the water to freeze.

• The type of water

• The container the water is placed in.

• The amount of water

Multiple Select

What would be the Controlled Variables (Constants) in Al´s experiment?

• The time it takes the water to freeze

• The type of water

• The container the water is placed in.

• The amount of water

Al’s salt water experiment

In this experiment Al thought the salt water would freeze more quickly than freshwater. To test Al´s hypothesis, he takes two ice trays and fills one with distilled water and the other with distilled water that has two tablespoons of salt added. He makes sure he puts exactly the same amount of water in each ice tray. He takes the trays and puts them side by side in the freezer. He checks the ice trays every 10 minutes to see if the water in each tray has begun to freeze. Al finds that after 20 minutes the water in the ice tray without the salt has started to form ice, while the ice tray with the salt water is still completely liquid.

Multiple Choice

Was Al´s hypothesis supported by his data?

• Supported

• Not Supported

• Partially Supported

Peter's Musical Experiment

Peter loves music. He believes that he does his homework better and faster when he listens to music. His parents say that music is distracting when studying.

Multiple Choice

What would Peter's Independent Variable be?

• Listening to music

• How long it takes to finish his homework

• Homework score

• Distractions in the study area

Multiple Select

What would Peter's Dependent Variable be? (careful...there could be more than one)

• Listening to music

• How long it takes to finish his homework

• Homework score

• Distractions in the study area

Multiple Select

What would be the controlled variables for Peter's experiment?

• Type of homework assignment

• How long it takes to finish his homework

• Listening to music

• Homework score

• Distractions in the study area

Multiple Choice

What was the independent variable in the germination experiment?

• Amount of sprouted seeds

• Amount of Light

• Amount of Water

• Amount of Heat

Multiple Choice

What was the dependent variable in the germination experiment?

• Amount of sprouted seeds

• Amount of Light

• Amount of Water

• Amount of Heat

If I increase the amount of water given to seed B then more seeds will sprout.

Use the image on the next slide to determine if the hypothesis above would be supported or not?

Multiple Choice

According to the data given, the hypothesis was...

• Supported

• Not Supported

• Partially Supported

Multiple Choice

In the "growing plants" experiment, what was the independent variable?

• Height of the Plant

• Amount of Water

• Amount of Light

• Type of nutrients in the soil

Multiple Select

In the "growing plants" experiment, what were the dependent variables?

• Height of the Plant

• Mass of the Plant

• Amount of Light

• Type of nutrients in the soil