2nd 9 WKS

Front

What is the net force when a box is pushed to the right with 300 newtons and to the left with 400 newtons?

Back

The net force is 100 newtons to the left.

Front

What is the principle of action-reaction forces?

Back

For every action, there is an equal and opposite reaction.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which plants convert light energy into chemical energy.

Front

What happens to magnesium strips when they are burned?

Back

Burning magnesium strips leads to a chemical change.

Front

What is resistive force?

Back

Resistive force is a force that opposes the motion of an object.

Front

What is the definition of force?

Back

Force is a push or pull on an object, measured in newtons.

Front

What is the difference between kinetic energy and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on position.

Front

What is the role of light energy in photosynthesis?

Back

Light energy is converted into chemical energy during photosynthesis.

Front

What is the effect of a greater resistive force on an object's motion?

Back

A greater resistive force will slow down or stop the object's motion.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.