Energy 6th

Jennifer is in a room that has an air temperature of 25ºC (77ºF). Before pouring cold water into a glass, she notices that the ice in the pitcher is melting.

What would be the best way for Jennifer to describe how thermal energy is being transferred

• Heat moves from the ice to the water.

• Cold moves from the ice into the water.

• Heat moves from the air into the water.

• Cold moves from the water into the room.

Tags

NGSS.MS-PS1-4

A student put a cube of butter on a metal rod. Then he placed the other end of the rod in a beaker of hot water. The setup for the investigation is shown below.

The butter melted in ten minutes. Which best explains why the butter melted?

• Thermal energy heated the metal rod which conducted heat to the butter.

• Electrical energy heated the metal rod which conducted heat to the butter.

• Chemical energy heated the metal rod which conducted heat to the butter.

• Mechanical energy heated the metal rod which conducted heat to the butter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Mary used a thermometer to test the air temperature at four points near a lit bulb. She recorded her data in the table.

Which best explains why the air closest to the bulb was warmest?

• because the bulb was insulated

• because the bulb gives off light

• because heat radiated from the bulb

• because the bulb conducted electricity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Use the diagram to answer the question that follows.

Which process is responsible for moving hot air from inside the stove to the outside?

• convection

• reflection

• radiation

• conduction

Which of the following will absorb heat energy?

• two sticks being rubbed together

• a piece of wood burning

• steel wool rusting

• ice cubes melting

Tags

NGSS.MS-PS1-4

Sunlight passes through the windows of a car and causes the car seats to get hot. Which type of energy flow is involved in heating the seats?

• conduction

• convection

• insulation

• radiation

Tags

NGSS.MS-PS1-4

A student standing near a campfire feels warmer as the fire grows. Which process most likely transfers heat from the campfire to the student?

• conduction

• convection

• radiation

• transformation

A hot water bottle is a rubber container that can be filled with hot water and then sealed.

What happens to the heat energy in the bottle when the bottle is placed on a pillow?

• The heat energy spreads from the water in the bottle to the pillow.

• The heat energy in the bottle absorbs heat energy from the pillow.

• The heat energy in the bottle changes to chemical energy in the pillow.

• The heat energy builds up and increases the water’s temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

When two objects are touching, heat is transferred from the warmer object to the cooler one by

• radiation.

• convection.

• conduction.

• connectivity.

Hot objects begin to cool as

• cooler air is transferred to the object.

• energy in the object is transferred to the surrounding air.

• atoms in the object react with the oxygen in the air.

• energy in the object cancel out energy in the air.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4