Scientific Method

The group in an experiment that is unchanged and serves as a basis of comparison; the one variable being tested has been omitted

• experimental group
• control group
• data group

• variable group

This factor in an experiment is changed or tested by the scientist. 

• dependent variable
• independent variable
• data
• control group

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

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 liquid. What is the variable being tested?

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

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• responding variable

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

Tags

NGSS.3-5-ETS1-3

A prediction that can be tested by experiment:

• data
• theory
• hypothesis
• fact

The information and observations that you gather from your experiment; you organize it into charts and graphs.

• data
• variables
• hypothesis

An experiment is performed to determine if an increase the amount of spinach you eat will increase the amount of iron in the blood.  What's the dependent variable?

• the amount of iron in your blood

• spinach you eat

An inference is based on:

• both scientific observations and known facts

• known facts

• scientific observations

• a rumor you started in the bathroom

Tags

NGSS.4-ESS1-1