Scientific Method

You use your five sense to find out about the world around you. This is called______.

• observations
• data
• conclusion
• scientific method

You are doing an experiment recording the growth of plants under different amounts of sunlight. What is the dependent variable?

• The sunlight
• The growth
• The experiment
• The amounts of photons

The variable that causes a change is the

• constant
• independent variable
• dependent variable
• control

The variable that is the result of the experiment is the 

• constant
• independent variable
• dependent variable
• control

A variable that never changes is known as a 

• constant
• independent variable
• dependent variable
• control

"Will ice melt faster in salt water?", is an example of a

• Hypothesis
• Question
• Dependent variable
• Control

What is the independent variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.

• The amount of water
• The melt time
• The size of the ice cube
• The amount of salt

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

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

How many manipulated variables does an experiment have?

• 0
• 1
• between 1 and 5
• as many as needed