Enhancing Experimental Investigations

What is the main focus when performing a simple experimental investigation?

• Measuring multiple outcomes

• Keeping all variables the same

• Changing one variable and keeping others constant

• Changing multiple variables

In the toy car investigation, what was the variable that was supposed to be changed?

• The type of toy car

• The height of the ramp

• The surface of the ramp

• The mass of the toy car

What should be measured in the toy car investigation?

• The time it takes for the toy car to stop

• The distance the toy car rolls

• The angle of the ramp

• The speed of the toy car

What is the term for the variable that is changed in an experiment?

• Control variable

• Independent variable

• Dependent variable

• Constant variable

What is the term for the variable that is measured in an experiment?

• Control variable

• Independent variable

• Dependent variable

• Constant variable

What mistake was made in the toy car investigation?

• Changing the type of toy car

• Changing the surface of the ramp

• Measuring the wrong variable

• Changing the height of the ramp and the mass of the cars

Why does changing more than one variable make the results invalid?

• It makes the data harder to analyze

• It makes the experiment too complex

• It prevents determining which variable caused the effect

• It introduces too many variables to control

What should have been kept constant in the toy car investigation?

• The surface of the ramps

• The type of toy cars

• The height of the ramps

• The mass of the toy cars

What is the key takeaway for improving the toy car investigation?

• Measure the speed of the toy cars

• Keep the height of the ramps the same

• Change the surface of the ramp

• Use different types of toy cars