Thermal Energy Quiz

A student is drinking a cup of hot chocolate as they sit by a campfire on a chilly evening. They know that the cup of hot chocolate transfers thermal energy to the surrounding air. The heated air over their cup of hot chocolate expands and rises and is replaced by cooler, denser air. This method of energy transfer is —

• convection

• condensation

• conduction

• radiation

A student is standing with their back facing a campfire. The student notices that their back is much warmer than their chest. They know that thermal energy is being transferred from the fire and that this method of energy transfer can happen even if no air is present. This method of energy transfer is —

• convection

• condensation

• conduction

• radiation

The diagram below shows an ice cube placed in a hot pan. Thermal energy is being transferred to the ice cube from the pan shown above by —

Which type of thermal energy transfer is illustrated in the diagram shown above?

• Electromagnetic waves of radiation

• Direct transfer of thermal energy by conduction

• Heat rising, cooling, and sinking by convection

• All three types of thermal transfer are illustrated

Which picture best illustrates thermal energy transfer by conduction?

• Metal spoon in hot water

• Air warming above a radiator in a room

• The Sun warming the Earth

• Warming hand next to a fire

What type of heat transfer occurs when you touch a metal seat with your hand and the seat feels cold?

• Radiation

• Convection

• Conduction

• Transpiration

Which model shows the direction thermal energy moves while an ice cube melts on a metal table?

• A

• B

• C

• D

The diagram below shows a hot plate and an electrical outlet. What energy transformation occurs when the hot plate is plugged into the outlet and the control knob is in the 'on' position?

• Thermal energy to electrical energy

• Electrical energy to thermal energy

• Thermal energy to mechanical energy

• Mechanical energy to thermal energy

A hydroelectric power plant works by using flowing water to turn a turbine. The turbine is connected to a magnet inside of a generator. When the magnet turns inside of the generator, the coiled wire surrounding the magnet will generate the type of energy that is sent along power lines to your home. What energy transformation occurs in a hydroelectric power plant?

• Mechanical to electrical

• Electrical to mechanical

• Chemical to mechanical

• Chemical to electrical

When a cow eats grass, it chews the grass and then swallows it. The food ends up in the stomach where it is further broken down and absorbed. The energy and matter from the grass is used by the cow’s body to produce milk. What energy transformations occur in the cow during the entire process of using grass to produce milk?

• chemical energy to mechanical energy

• light energy to chemical energy

• chemical energy to electrical energy to mechanical energy

• chemical energy to mechanical energy to chemical energy