3rd Quarter Science - Machines

What is stored energy?

What is energy in motion?

True or False: someone at a higher altitude would have greater potential energy

• True

• False

True or False: Potential energy can be transferred into kinetic energy.

• True

• False

What are two forms of mechanical energy?

• Kinetic energy

• electromagnetic energy

• potential energy

• Thermal energy

It is the change of an object's position.

To determine whether an object has changed position, we need a fixed, non moving object to use as __.

What is the importance of a reference point?

• It is only relevant in certain situations. it points out how big an object is.

• It is only used for decoration
• It has no importance
• It provides a basis for comparison or measurement to determine whether an object has changed position.

What is the formula for speed?

• distance / time

• speed x time

• distance x time

• distance / speed

What is the formula for speed?