In the example with the twins, what is the main reason the parents decided to treat one child to vacations and not the other?

• To save money on vacations

• To see which child is happier as an adult

• To give one child a special treat

• To see which child performs better in school

Why is it important to have a control group in a scientific experiment?

• To make the experiment more interesting

• To have more participants

• To compare results and determine the effect of the variable

• To ensure everyone gets the same treatment

What is the definition of an experimental group?

• The group that does not receive the variable being tested

• The group that receives the variable being tested

• The group that is observed without any changes

• The group that is used to compare different variables

Tags

NGSS.MS-PS2-5

In the nitrogen fertilizer experiment, which group is the control group?

• The group that receives sunlight

• The group that receives nitrogen fertilizer

• The group that receives water

• The group that does not receive nitrogen fertilizer

In the flower pattern experiment, what makes it tricky to identify the control group?

• All flowers have the same pattern

• The flowers are of different species

• The bees are not attracted to any flowers

• There are multiple patterns to compare

What could be considered the control group in the flower pattern experiment?

• The flower with the most unique pattern

• The flower with the most normal pattern

• The flower with the least number of bees

• The flower with the brightest color

In the shirt color experiment, why is it arbitrary to choose the control shirt?

• The shirts are made of different materials

• The shirts are all different sizes

• Any color can be considered normal based on the hypothesis

• All shirts are the same color

Which shirt color would the narrator likely consider as the control in the shirt color experiment?

• Green

• Yellow

• Blue

• Red

What is a key takeaway when comparing multiple variations in an experiment?

• Never use a control group

• Always use the most unique variation as the control group

• You can choose any variation as the control group

• Always use the same control group

Why might it be important to consider different hypotheses when selecting a control group?

• To make the experiment more complex

• To confuse the participants

• To ensure the experiment is fair

• To align the control group with the expected outcome