4th Grade Science Review

What is energy?

• the ability to do work

• stored energy

• moving energy

• renewable energy

What is potential energy?

• renewable energy

• non renewable energy

• moving energy

• stored energy

What is kinetic energy?

• stored energy

• potential energy

• moving energy

• renewable energy

A moving object will have more energy when the object...

• changes direction

• stops moving

• moves faster

• loses mass

What property of the wave is represented by the letter "A"?

• crest

• wavelength

• amplitude

• trough

All waves carry______ as they travel from place to place.

• energy

• space

• water

• matter

which is an example of energy transfer by heat (select all that apply)

• a windmill powering a farm

• water running through a dam

• s'mores in a solar oven

• heat lamp warming food

What do solar cells do?

• it converts wind into electrical energy

• it converts water into solar energy

• it transmits radio wave signals

• it converts light into electrical energy

How is energy transferred?

• light

• heat

• sound

• electrical currents

• all of the above

Which of the following lists only renewable resources?

• coal, sunlight, water, wood

• wind, sunlight, water, plants

• sunlight, wind, steel, oil

• natural gas, coal, oil, minerals