Flashcard on Hydropower

Front

What is hydropower?

Back

The process of using the energy of moving water to create electricity.

Front

What is an independent variable in an experiment?

Back

A variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable in an experiment?

Back

A variable that is measured and affected in the experiment.

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Forces that are not equal and can cause an object to start moving, stop moving, or change direction.

Front

What is the effect of unbalanced forces on motion?

Back

Unbalanced forces cause a change in the motion of an object.

Front

What is the role of control variables in an experiment?

Back

Control variables are kept constant to ensure that the results are due to the independent variable.

Front

What is the relationship between force and motion?

Back

Force is a push or pull that can cause an object to move or change its motion.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = m × a).

Front

What is kinetic energy?

Back

The energy of an object due to its motion.