Experimental Design

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.

• Independent
• Dependent
• Control

The parts of the experiment that must be kept the same.

• Constants
• independent
• Dependent

If I water the plant more often, then it will grow taller.  Name the independent variable.

• The height of the plant
• The size of the pot
• The amount of water
• The amount of light.

If I water the plant more often, then it will grow taller.  Name the dependent variable.

• The amount of water.
• The amount of soil.
• The height of the plant.
• The amount of water.

If I water the plant more often, then it will grow taller. Which of these is not a constant?

• The amount of soil.

• The pot size.

• The type of plant.

• The amount of water.

Which of these is not an observation.

• There are footprints.
• The person was dizzy.
• The footprints are black.
• There are dots.

When you make a prediction based upon your observations, it is called a/an _____________.

• Inference
• Observation
• Control group
• Guess

Which of these is not an observation?

• 2 sets of foot prints.

• They ended up in the same spot.

• One animal ate the other.

• The prints are black

Another name for an educated guess?

• Hypothesis

• Good guess

• Scientific method

• Scientific notation.