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- Multiple ChoicePlease save your changes before editing any questions.What is Thermal expansion?The transfer of thermal energy between materials by the collisions of particlesIs a decrease in a materials volume when temperature decreasesAn increase in a materials volume when temperature increasesChicken fried rice
- Multiple ChoicePlease save your changes before editing any questions.Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ...thermal energyspecific heatthermal expansionconductors
- Multiple ChoicePlease save your changes before editing any questions.A bimetallic strip is made up of _____________________ welded together.two metals of the same kindtwo different metals that expand and contract unequallytwo different metals that expand and contract equally
- Multiple ChoicePlease save your changes before editing any questions.
The picture shows a bimetallic strip in a fire alarm. When there is a fire outbreak, the bimetallic strip will get hot, ....
bend downwards, complete the circuit and the alarm rings.
bend upwards, open the circuit and the alarm will not ring.
becomes longer, open the circuit and the alarm will not ring.
- Multiple ChoicePlease save your changes before editing any questions.Objects gain heat and _________.expandcontract
- Multiple ChoicePlease save your changes before editing any questions.The liquid in the thermometer rises when it is placed in the hot water because ___________.it gains heat from the hot water and expands.loses heat from the hot water and contracts.the surrounding air is too warm.the liquid is boiling.
- Multiple ChoicePlease save your changes before editing any questions.Eggs cooking in a frying pan.ConductionConvectionRadiation
- Multiple ChoicePlease save your changes before editing any questions.Snowman melting in the sun.ConductionConvectionRadiation
- Multiple ChoicePlease save your changes before editing any questions.Water boiling in a kettle.ConductionConvectionRadiation
- Multiple ChoicePlease save your changes before editing any questions.Warmth from the fireplace circulating through the house.ConductionConvectionRadiation
- Multiple ChoicePlease save your changes before editing any questions.Tongue freezing to a metal pole.ConductionConvectionRadiation
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is an example of convection?
A hair dryer is drying up your hair.
When the AC or heater changes the temperature.
When a car engine turns hot after being turned on.
When you are making soup and the water is rising and lowering.
- Multiple ChoicePlease save your changes before editing any questions.The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?radiationconductionconvectioninsulation
- Multiple ChoicePlease save your changes before editing any questions.This is an example of a(n)conductor of heatinsulator of heat
- Multiple ChoicePlease save your changes before editing any questions.Which material is the best conductor of heat?glassstyrofoammetalwood
- Multiple ChoicePlease save your changes before editing any questions.What materials would be good insulators for a handle on a pan or pot that would be used on the stove?wood or plasticmetal or rubberwood or rubbercopper or steel
- Multiple ChoicePlease save your changes before editing any questions.When you leave your cold drink outside, the glass may have water drops on it. This is an example of...condensationevaporationprecipitationestuary
- Multiple ChoicePlease save your changes before editing any questions.A student was doing a science investigation in school. Her teacher asked her to fill two beakers with water. What would be the temperature of the water when it started to boil?100 degrees celsius50 degrees celsius32 degrees celsius20 degrees celsius
- Multiple ChoicePlease save your changes before editing any questions.Which is NOT an insulator.WoolPlasticCopperGlass
- Multiple ChoicePlease save your changes before editing any questions.Which process does the diagram show?freezingboilingevaporationmelting
- Multiple ChoicePlease save your changes before editing any questions.Conduction is the transfer of thermal energy ___________.in the form of electromagnetic waves such as infrared radiation without the aid of a mediumthrough a medium without any flow of the mediumby means of convection currents in a fluid (liquid or gas), due to a difference in densityNone of the above
- Multiple ChoicePlease save your changes before editing any questions.List the correct order of conduction.
1. They collide more vigorously with neighbouring particles
2. Particles at the heated end gain kinetic energy and vibrate vigorously.
3. Particles at cooler end vibrate vigorously.1, 2, 33, 2, 12, 1, 31, 3, 2 - Multiple ChoicePlease save your changes before editing any questions.Why do metals conduct thermal energy more quickly?Particles vibrate fasterDue to the presence of bound electronsDue to the presence of free electronsMetals are grey
- Multiple ChoicePlease save your changes before editing any questions.Which phase is the best conductor of heat?SolidLiquidGas
- Multiple ChoicePlease save your changes before editing any questions.During convection, more dense currents _________ and less dense currents _________.sink, riserise, sink
- Multiple ChoicePlease save your changes before editing any questions.Analyze the image. The red arrows represent warm water rising and the blue arrows represent cold water sinking. What type of heat transfer is responsible for this movement?conductionconvectionradiation
- Multiple ChoicePlease save your changes before editing any questions.Radiation is a method of thermal energy transfer that moves -through empty space.when objects touch.only through solids.in the motion of fluids.
- Multiple ChoicePlease save your changes before editing any questions.Which container allowed the most transfer of thermal energy from the water to the environment?GlassWoodPaperPlastic
- Multiple ChoicePlease save your changes before editing any questions.The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer.conductionconvectionradiation
- Multiple ChoicePlease save your changes before editing any questions.
Dull black surfaces are....
good as an emitter of radiation
good as an absorber of radiation
poor as an emitter of radiation
poor as an absorber of radiation
- Multiple ChoicePlease save your changes before editing any questions.
How is this vacuum flask effective in reducing thermal transfer?
Radiation is eliminated by the vacuum space
Conduction is eliminated by the vacuum space
Convection is eliminated by the vacuum space
Radiation is reduced by the silver surface
- Multiple ChoicePlease save your changes before editing any questions.
What are the colors of the left and right side of the Leslie cube shown in the photo?
Left: Black Right: Black
Left:White Right: Black
Left: Black Right: Silver
Left: White Right: White