Heat Transfer

A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to

• Convection

• Conduction

• Radiation

• Globulation

In a swimming pool, the water near the surface is slightly warmer. The temperature of the water near the top rises because of

• Convection

• Conduction

• Radiation

• Too many dogs being in the pool!

A fireman that is at a building that is on fire feels a door and it is hot. Why does his hand feel hot?

• Convection

• Conduction

• Radiation

• The Human Torch was on the other side!

A huge boulder at the state park in Arizona gets so hot during a mid summer's day. This is due to...

• Convection

• Conduction

• Radiation

• Boogie Fever

As you hold a piece of ice, it begins to melt from the warmth of you hand on it. This is because of

• Convection

• Conduction

• Radiation

• the fact that you are the Human Torch from the Fantastic Four.

In heat transfer, heat always flows from the _______________ object to the _______________ object.

• hotter / colder

• colder / hotter

• hotter / hotter

• colder / colder

Which of the following statements is true regarding heat energy?

• The quicker a molecule moves, the colder it is.

• The slower a molecule moves, the warmer it is.

• The quicker a molecule moves, the warmer it is.

• The faster you dance, the quicker you get tired.

Which best explains why a hot air balloon floats?

• The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

• The heated air expands to fill the balloon. The air in the balloon is now heavier than the surrounding air, causing the balloon to rise.

• The heated air contracts to fill the balloon. The air in the balloon is now denser than the surrounding air, causing the balloon to rise.

• The heated air contracts to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

Which best describes the process of convection?

• Convection is the primary way heat travels through rays.

• Convection is the primary way heat travels through metals.

• Convection is the primary way heat travels through appliances.

• Convection is the primary way heat travels through liquids and gasses.

A small ice cube at a temperature of 0°C is dropped into a glass of water at 28°C and melts. What is the temperature of the water in the glass just after the ice cube melts?

• 0°C

• between 0°C and 28°C

• 28°C

• greater than 28°C