Conduction, Convection and Radiation

Which will most likely occur when raw egg is placed on black pavement on a hot, summer day?

• The pavement will conduct the heat and cook the egg.
• The egg will reflect the heat and make the pavement hotter underneath.
• The egg will absorb the heat  and leave the pavement hotter underneath.
• The pavement will absorb the heat from the egg, and the egg will stay raw.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which describes what can happen as a result of radiation?

•  A piece of wood burns in a fire.
• A shirt is hot after having been  ironed.
• A can of soup is heated in a pot on a stove.
• A car’s inside temperature rises  to over 100 degrees on a sunny day.

Tags

NGSS.MS-PS3-5

How is heat transferred when boiling a pot of water on the stove?

• conduction
• convection
• combustion
• radiation

Tags

NGSS.MS-PS1-4

Which best explains how bacon is fried on a stove burner?

• The bacon creates a convection current, the  heat rises to the pan, and then rises to the stove burner.
• The bacon transfers heat directly to the pan, and the pan transfers heat directly to  the stove burner.
• The stove burner radiates heat to the pan,  and the pan radiates heat to the bacon.
• The stove burner transfers heat directly  to the pan, and the pan directly  transfers heat to the bacon.

Tags

NGSS.MS-PS3-4

Which of the following statements confirms the law of conservation of energy?

• Energy that moves within a closed system is lost outside the

  system.

• Energy that escapes an open system is transferred to the

  environment.

• Energy can be created or destroyed.

• Energy is transformed into matter.

Tags

NGSS.MS-PS3-5

A student conducted an experiment where they used 500 J of energy from a Bunsen burner to increase the temperature of water in a beaker.

Based on calculations, the student determined that the water only absorbed 200 J of the heat applied by the Bunsen burner.

Which if the following statements best explains what occurred?

• The remaining energy from the Bunsen burner was transferred to other substances in the environment.

• The energy is not conserved in the heat transfer process that

  occurred in the experiment.

• It requires more joules of energy from a flame to convert to joules of stored energy in water.

• The energy is converted into matter in the form of black soot on the bottom of the beaker.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A bowling ball rolls down a friction-less ramp resulting in a decrease in its potential energy. Which of the following statements is correct?

• There is an increase in friction equal to the decrease in potential energy.

• There is an increase in kinetic energy equal to the decrease in

  potential energy.

• There is an increase in friction greater than the decrease in potential energy.

• There is an increase in kinetic energy greater than the decrease in

  potential energy.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A small group of children were observed playing at a local park. One child shared a bag of chocolate candies by pouring a small amount into the hands of her friends. After consuming the candy, the children wiped their chocolate-covered hands on their pants.

Which of the following statements correctly explains why the children had chocolate on their hands?

• Thermal energy from the child’s hand was transferred to the candy.

• Thermal energy from the candy was transferred to the child’s hand.

• The candy melted because it was a clear, sunny day.

• Chemical energy was transformed into thermal energy.

Tags

NGSS.MS-PS1-4

How does placing ice in a glass with tap water decrease the temperature of the water?

• Cold is transferred from the ice to the water.

• Heat is transferred from the water to the ice.

• The ice loses cold to the environment.

• The water absorbs cold from the environment.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The transfer of thermal energy is always ―

• from warmer to cooler

• from cooler to warmer

• upward

• downward