Draft

If 1000 J of heat was added to each material, which will have the LARGEST increase in temperature?

• copper

• granite

• iron

• basalt

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

With the central heating on, Darcy’s living room should be a comfortable 19°C. But the room only reaches 16°C, which is too cold. Darcy realizes that warm air is escaping through a gap underneath the door. She decides to make a device called a draft excluder (a fabric tube stuffed with foam) to keep the warm air inside the room and the cold air outside. What is the independent variable?

• Temperature of the living room

• Thickness of draft excluder

• Thickness of the door

• Initial temperature of the living room

What type of thermal energy transfer is occurring at point A?

• Radiation

• Convection

• Conduction

• None of the above

What type of thermal energy transfer is occurring at point B?

• Convection

• Conduction

• Radiation

• Kinetic

Tags

NGSS.MS-PS1-4

In a laboratory experiment, a student uses a draft excluder to minimize heat loss in a model house. Which of the following is the dependent variable in this experiment?

• Temperature inside the model house

• Material of the draft excluder

• Size of the model house

• Color of the draft excluder

Tags

NGSS.MS-PS3-4

Which scientific principle explains why a draft excluder reduces heat loss in a room?

• Conduction

• Convection

• Radiation

• Evaporation

A draft excluder is placed at the bottom of a door. What type of energy transfer is primarily being reduced?

• Conduction

• Convection

• Radiation

• Evaporation

Tags

NGSS.MS-PS3-3

In an experiment to test the effectiveness of different materials for draft excluders, what is the control variable?

• Type of material used

• Length of the draft excluder

• Temperature outside the room

• Time of day

Which of the following materials would be most effective as a draft excluder due to its insulating properties?

• Metal

• Glass

• Foam

• Plastic

Tags

NGSS.MS-PS3-3

A draft excluder is used to prevent cold air from entering a room. What is the primary method of heat transfer being blocked?

• Conduction

• Convection

• Radiation

• Evaporation

Tags

NGSS.MS-PS3-3