Heat Transfer

Vivian placed an ice cube in a tray of warm water. The following picture shows her investigation.  Which statement describes the energy transfer that happens in Vivian’s investigation?

• Energy in the form of heat is transferred from the ice cube to the water by radiation.
• Energy in the form of  heat is transferred from the water to the ice cube by radiation.
• Energy in the form of  heat is transferred from the ice cube to the water by conduction.
• Energy in the form of  heat is transferred from the water to the ice cube by conduction.

The sun shines down on this family as the play on the beach.

• conduction
• convection
• radiation

Walking on the warm sand sand with your bare feet.

• conduction
• convection
• radiation

In this experiment, the WARM red dye and the COLD blue dye were placed in the water at the same time. The warm red dye rose to the top while the cold blue dye sank to the bottom.

• conduction
• convection
• radiation

Which direction will the heat flow while this ice cap melts?

• there is no heat transfer
• from the icecap to the water
• from the water to the icecap

Warm air rises and the cool air sinks.

• conduction
• convection
• radiation

A group of friends gather around a fire to stay warm.

• conduction
• convection
• radiation

The baby chickens are kept warm from the heat lamps.

• conduction
• convection
• radiation

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high

Warm air is __________ dense than cold air and rises creating convection currents.

• more
• less