Heat Transfer and Kinetic Model Quiz

Heat Transfer and Kinetic Model Quiz

Transfer of Thermal Energy

Multiple Choice

Near the ceiling of a room the air is warmer. The warm air rises because of

• its higher density

• its lower density

• the fan blows it

Multiple Choice

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

• high, low

• low, high

• high, high

• low, low

• doesn't really matter

Multiple Choice

Transfer of thermal energy through direct contact / "touch"

• conduction

• convection

• radiation

Multiple Choice

Transfer of thermal energy through movement of liquids and gases (aka fluids)

• conduction

• convection

• radiation

Multiple Choice

Transfer of thermal energy through vacuum or air

• conduction

• convection

• radiation

Multiple Choice

A chair is placed several feet from a fireplace.  The fireplace has a glass screen.  The side of the chair facing the fireplace gets warm because of 

• conduction
• convection
• radiation

Multiple Choice

You get sunburned due to __________ from the sun.

• conduction
• convection
• radiation

Multiple Choice

A huge rock at the Hort Park gets so hot during the day because of

• conduction

• convection

• radiation

Multiple Choice

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

• conduction
• convection
• radiation

Multiple Choice

Johnny grabs the handle of the hot pot and it feels warm.

• conduction

• convection

• radiation

Multiple Choice

Ironing a shirt is an example of...

• conduction

• convection

• radiation

Multiple Choice

Walking on the sand with bare feet and you feel the sand is warm. This demonstrates

• conduction

• convection

• radiation

Multiple Choice

The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 

• conduction
• convection
• radiation

Multiple Choice

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

• more
• less

Multiple Choice

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

• conduction

• convection

• radiation

Multiple Choice

The way the heat is moving from the hot coffee is called...

• conduction

• convection

• radiation

Multiple Choice

When a pot is touching a stove that is on, what heat transfer is happening?

• Conduction

• Convection

• Radiation

Multiple Choice

Which of the following is needed for convection to happen?

• Fire

• Fluid

• Electromagnetic waves

• Light or rays

Multiple Choice

What heat transfer happens when you burn your hand by touching a fire?

• Conduction

• Convection

• Radiation

Multiple Select

Which of the followings are examples of convection?

(2 answers)

• When a hair dryer is drying up your hair.

• When the air conditioner or heater cools or heats up a room.

• When a car engine turns hot after being turned on.

• When you are making soup, the water is rising and falling.

Multiple Choice

What kind of heat transfer happens when you are sunbathing at the beach?

• Conduction

• Convection

• Radiation

Multiple Choice

Which is correct about convection?

• when heat transfers through electromagnetic waves

• when heat transfers through objects that are touching

• a hot liquid or air that expands, becomes less dense and rises

Multiple Choice

Which is correct about conduction?

• when heat transfers through electromagnetic waves

• when heat transfers through objects that are touching

• a hot liquid or air that expands, becomes less dense and rises

Multiple Choice

Thermal energy always moves:

• From a higher density object to a lower density object.

• From a higher temperature object to a lower temperature object.

• From a colder object to a warmer object.

• From a heavier object to a lighter object.

Transfer of Heat

Heat or Thermal energy always moves from a hotter object to a colder object. Hot object possesses more thermal energy than cold object.

Kinetic Model of Matter Questions

Some questions come with explanation after you submitted the answer. Do read through the explanation to better answer the subsequent questions.

Happy Playing!

Multiple Choice

When the temperature of a matter decreases the particles ...

• speed up and move farther apart

• speed up and move closer together

• slow down and move farther apart

• slow down and move closer together

Multiple Choice

When air in a hot air balloon is heated the air inside the baloon...

• expands
• contracts
• evaporates
• condenses

Heating and Arrangement of Particles

When a matter is heated, the particles gain kinetic energy and moves faster and further from one another. This makes volume of the matter increases and the matter expands.

The particles in the matter can NEVER change size.

Multiple Choice

Two states of matter are described as follows.

In state 1, the molecules are very far apart. They move about very quickly at random in straight lines until they hit something.

In state 2, the molecules are quite closely packed together. They move about at random. They do not have fixed positions.

What is state 1 and what is state 2?

• state 1 is gas and state 2 is liquid

• state 1 is gas and state 2 is solid

• state 1 is liquid and state 2 is gas

• state 1 is solid and state 2 is liquid

Multiple Choice

When ice melts into water,

• the intermolecular force weakens and the molecules move faster.

• the intermolecular force weakens and molecules move further from one another.

• the intermolecular force becomes stronger and the molecules move slower.

• the intermolecular force becomes stronger and the move nearer to one another

Change of State and Motion of Particles

When changing state (e.g. melting), the temperature of the matter stays constant (e.g. at melting point). This means the average kinetic energy of the particles remains the same too. Hence, the particles did not move faster, but only move further from one another to form liquid.

Multiple Choice

Which of the following has the lowest density?

• Diamond
• Rock
• Water
• Helium

Density and Arrangement of Particles

When the particles in a matter are closely packed, the density of the matter is higher. Hence, density of a matter is highest for solid, followed by liquid and lastly gas.

Multiple Choice

What would be the change when heat is supplied to a gas?

• The particles in the matter expand tremendously.

• The particles move randomly in all directions.

• The average kinetic energy of the particles increases.

• The gas contract and occupy lesser space.

Multiple Choice

Which of the following is not a property of a solid?

• It expands a little when heated compared to a liquid

• It takes any shape of a container

• It is cannot be compressed

• It usually has a higher density than a gas

Multiple Choice

Which of the following statements best explains why the fragrance of a perfume can move from one place to another?

• The perfume particles moves randomly in all directions on their own.
• The perfume particles expand their sizes when exposed to air.
• The perfume particles are carried by the air molecules.
• The perfume particles are moved by the wind.

Multiple Choice

Which of the following properties cannot be explained by the kinetic theory of particle?

• Density
• Compressibility 
• Shape
• Colour

How do we see colour?

(not in syllabus, for information only) Our eyes see colour when the object reflect the light into our eyes. Red apple reflects red component of white light, green grass reflect green component of white light and black hair reflect no light.

Multiple Choice

Which of the following explains why solids cannot be compressed?

• Solids have a large number of particles per unit volume.

• Solids have closely packed particles.

• Solids have particles arranged in regular pattern.

• Solids have particles which vibrate about fixed positions.

Compressibility and Arrangement of Particles

Matter can only be compressed if there is space between the particles in the matter. The motion of the particles (though affected by the forces between the particles and will affect the arrangement of the particles) does not affect the compressibility of a matter.

Congratulations for finishing the quiz! Have a great holiday!