Unit 1 - Nature of Science

What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?

• the paper used
• the type of paper airplane
• the distance of each plane's flight
• how hard the plane is thrown

The part of the experiment that remains the same for the control and experimental groups.

• constants

• control

• independent

• dependent

Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the dependent variable.

• amount of water

• temperature of water

• height of ice cube

• temperature the ice cube was at its highest height

Brooke is trying to investigate whether UV Light, Black Light, or Green Light can grow a plant taller than normal. What would the control group be in her investigation? (be careful, this one is a little tricky!)

• UV Light

• Black Light

• Different type of lights

• Sunlight

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

• dependent variable

• independent variable

• data

• control group

A teacher wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music.

Identify the independent variable in this experiment.

• classical music resulted in the highest pulse rate

• high pulse rate

• pulse rate

• types of music

What is a factor that is measured for change in an experiment?

• control
• constant
• independent variable
• dependent variable

The part of the experiment that does not contain the independent variable. Used for comparison.

• Control Group
• Experimental Group
• Results
• Data

An experiment is designed to test the following: "Spending time with a pet reduces stress." The independent variable in this experiment would be...

• Stress levels

• A person who does not spend time with a pet

• Amount of time spent with a pet

• The type of pet

An experiment is designed to test the following: "Spending time with a pet reduces stress." The dependent variable in this experiment would be...

• Stress levels

• A person who does not spend time with a pet

• Amount of time spent with a pet

• The type of pet