Understanding Experimental Investigations

What is the main focus of a simple experimental investigation?

• Changing multiple variables

• Observing without measuring

• Changing one variable and measuring another

• Keeping all variables constant

In the sled experiment, what was the independent variable?

• The mass of the sled

• The type of surface

• The spring scale used

• The method of pulling the sled

What does a spring scale measure in an experiment?

• Mass

• Temperature

• Distance

• Force

Which of the following was kept constant in the sled experiment?

• The surface type

• The amount of force

• The question being answered

• The sled and mass

What question was the sled experiment designed to answer?

• How does the spring scale work?

• What is the best method to pull a sled?

• How do different surfaces affect the force needed to drag the sled?

• How does mass affect speed?