energy-quiz

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can both be created and destroyed

• energy can neither be created nor destroyed

Energy of an object or system that includes kinetic, gravitational potential and elastic potential is called …

• Mechanical energy.

• Thermal energy.

• Internal energy.

• Work energy.

The handle of a cooking pot will most likely become hot when cooking because of a method of thermal energy called…

• conduction.

• convection.

• convention.

• radiation.

Particles in motion have ___________ energy.

• thermal

• kinetic

• potential

• sound

How do you increase the kinetic energy of molecules?

• Decrease the temp

• change the energy input

• increase the thermal energy

• expand the molecules and increase the density

What type of thermal energy transfer is warming the man from the fire?

• Convection

• Conduction

• Radiation

• Heat

What type of thermal energy transfer is occurring from the steam rising from the hot coffee?

• Conduction

• Convection

• Radiation

• Gas

An iron transfers heat to clothing through ___________.

• Conduction

• Convection

• Radiation

• Electricity

What two factors affect an object's kinetic energy?

• area and volume

• mass and weight

• weight and height

• mass and speed

Kinetic energy is measured in

• Newtons (N)

• Joules (J)

• Kilograms (kg)

• miles per hour (mph)