Phase Change Icy Heat Reading

What is the major problem caused by ice-covered roads in cold areas?

• Potholes

• Accidents

• Traffic jams

• Construction delays

How do engineers plan to melt ice and clear it off roads?

• Installing heating lamps

• Using chemical sprays

• Sprinkling salt

• Running electric currents through the road surface

In science and engineering, what is the term used for the energy transferred to make ice change phase from solid to liquid?

• Heat

• Sound

• Electricity

• Light

Why would the new type of road surface not feel hot to the touch even when it's melting the ice?

• It has insulating properties

• It has a cooling effect

• It has a low melting point

• It has a high thermal conductivity

What is the specific meaning of the word 'heat' in science?

• Volume

• Thermal energy

• Temperature

• Pressure

What happens when two objects with different temperatures touch?

• Both objects change temperature

• No heat transfer occurs

• Heat transfers from the warmer object to the colder object

• Heat transfers from the colder object to the warmer object

Why does an ice cube always feel cold to the touch?

• It has a low thermal conductivity

• It has a high melting point

• It has a low specific heat capacity

• Heat transfers from our hands to the ice

What would happen if an ice cube came into contact with a piece of dry ice?

• The dry ice would give off heat

• The ice cube would give off heat

• Both objects would remain at the same temperature

• No heat transfer would occur