Science Quiz on Variables and Forces

What is the independent variable on this graph?

• Flow time (s)

• Temperature (°C)

• Both flow time (s) and temperature

• Neither flow time nor temperature

In an experiment, which variable is manipulated by the experimenter?

• Dependent variable

• Control variable

• Independent variable

• Constant

Tags

NGSS.MS-PS2-2

What is the purpose of the dependent variable in an experiment?

• It is manipulated by the experimenter.

• It is measured to see the effect of changes.

• It remains constant throughout the experiment.

• It is used as a control.

Tags

NGSS.MS-PS2-2

Which variable stays constant during an experiment?

• Independent variable

• Dependent variable

• Control variable

• None of the above

What was also changed in the 'Levers' lab when the position of the fulcrum was changed?

• Gravity

• Effort force

• Weight

• Resistance force

Which term best describes the force used to move a lever?

• Load

• Resistance force

• Effort force

• Gravity

How does moving the fulcrum closer to the load affect the lever?

• Increases the mechanical advantage

• Decreases the mechanical advantage

• Has no effect on mechanical advantage

• Makes the load heavier

Which part of a lever is the pivot point?

• Load

• Effort

• Fulcrum

• Resistance force

What is the upward force that makes objects float?

• Gravity

• Buoyancy

• Resistance

• Density

An object sinks in water. What can be said about its density?

• Its density is less than water.

• Its density is equal to water.

• Its density is greater than water.

• It has no density.