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- 1. Multiple Choice
Energy cannot be created or destroyed. It can only be changed from one form to another. This is known as the law of conservation of ____________ :
mass
energy
temperature
- 2. Multiple Choice
There are different kinds of electricity: 1.) static electricity - contact between equal amount of protons and electrons (positively and negatively charged subatomic particles). 2.) current electricity - flow of electric charge across an electrical field (created for a purpose it will travel through a medium like an insulated wire). 3.) hydro electricity - water moves turbines which produces mechanical energy which produces electrical energy 4.) solar electricity can generate heat which produces thermal energy or can produce electron movement via materials within a battery.
All of this is an example of:
transfer of mechanical energy
transfer of radiation energy
transfer of chemical energy
all of the above
both a and b
- 3. Multiple Choice
At which point is potential energy greatest?
W
X
Y
Z
- 4. Multiple ChoiceWhat kind of energy is in a rock at the edge of a cliff?PotentialKineticBoth potential and kinetic energynone of the above
- 5. Multiple ChoiceThe temperature of a substance increases as___.the substance expandsthe average kinetic energy of its particles increasesthe substance's volume increasesthe substance's mass increases
- 6. Multiple Choice
Temperature is a measure of the "average kinetic energy" of all the particles in an object.
cold = slow moving;
hot = fast moving;
What does the average kinetic energy of an object's particles tell you?
how hot the object is
how cold the object is
the temperature of the object
how fast the particles are moving
- 7. Multiple Choice
Temperature and thermal energy are different from one another. Temperature is related to the average kinetic energy of the particles, while thermal energy is the total kinetic energy of all of the particles of in a substance. A glass of water can have the same temperature as a lake, but the lake has more thermal energy because it contains many more water molecules.
Refer to the image. Which container of chocolate milk has the greatest thermal energy?
container A
container B
container C
container D
- 8. Multiple Choice
The matter that makes up a frozen juice bar is the same whether the juice bar is frozen or has melted. The matter is just in a different form, or state. Remember that the kinetic theory of matter states that the particles that make up matter move around at different speeds. The state of a substance depends on the speed of its particles. Adding energy in the form of heat to a substance may result in a change of state. The added energy may cause the bonds between particles to break. This is what allows the state to change. Adding energy to the form of heat to a chunk of glacier may cause the ice to melt into water. Removing energy in the form of heat form a substance may also result in a change of state.
What happens to the bonds between particles when heat is added?
the bonds refrain from moving
the bonds break away and begin moving
the state of matter goes from a gas to a solid
the state of matter goes from a liquid to a solid
- 9. Multiple Choice
What happens when heat is removed from a liquid? (depth of knowledge 2/5)
the particles evaporate
the particles speed up
the temperature decreases
the temperature increases
- 10. Multiple Choice
When you put ice cubes in a pitcher of lemonade, energy is transferred from the warmer lemonade to the colder ice. The thermal energy of the lemonade decrease, and the thermal energy of the ice increases.
Which statement about heat is true?
heat and temperature are the same property of an object
heat and thermal energy are the same property of an object
heat is the energy transferred from an object of high temperature to one of low temperature
heat measures the average kinetic energy of an object
- 11. Multiple Choice
When you put ice cubes in a pitcher of lemonade, energy is transferred from the warmer lemonade to the colder ice. The thermal energy of the lemonade decrease, and the thermal energy of the ice increases.
Because the particles in the lemonade have transferred some of their thermal energy to the ice molecules, the average kinetic energy of the lemonade:
Which statement about heat is true?
increases
decreases
both objects remain the same
- 12. Multiple Choice
Which transition best shows how particle movement changes when heat is added to a system.
A to B
C to D
E to F
- 13. Multiple Choice
Which transition best shows how particle movement changes when heat is removed from a system. Select all that apply.
A to B
C to D
E to F
- 14. Multiple Choice
Conductors transfer the kinetic energy of particles and some transfer better than others, like metal. Insulators are poor conductors, so we use insulators when we want to separate heat from other areas, like insulation in a home or a styrofoam cup. Conductors are materials that...
Allow heat to pass through
Stop heat from passing through
Allow cold to pass through
Stop cold from passing through
- 15. Multiple Choice
There are 3 main ways to transfer energy as heat: conduction - the transfer of heat through direct touching, convection - the transfer of heat by moving convection currents (usually liquid or gas), and radiation - the transfer of heat by electromagnetic waves.
Which type of heat transfer is shown?
convection
conduction
radiation
stir frying
- 16. Multiple Choice
There are 3 main ways to transfer energy as heat: conduction - the transfer of heat through direct touching, convection - the transfer of heat by moving convection currents (usually liquid or gas), and radiation - the transfer of heat by electromagnetic waves.
What type of heat transfer is shown here?
convection
conduction
radiation
sun shining
- 17. Multiple Choice
There are 3 main ways to transfer energy as heat: conduction - the transfer of heat through direct touching, convection - the transfer of heat by moving convection currents (usually liquid or gas), and radiation - the transfer of heat by electromagnetic waves.
Which type of heat transfer is shown?
convection
conduction
radiation
hot air balloon
- 18. Multiple Choice
After holding an ice pack against his skin for 20 minutes, the man notices the ice pack is melting. Why is this happening?
radiation - the ice pack is now all melted
conduction - body heat transferred to the cold ice pack
convection - the water in the ice pack flowed in a circle pattern
conduction - heat came from the bigger object to the smaller
- 19. Multiple Choice
If this drink is sitting outside on a hot, sunny day, name two reason why the drink won't stay cold.
radiation - from the sun is heating the glass
conduction - the medium beneath the glass is heating
convection - the air is moving in a circle pattern around
conduction - the straw is heating up
- 20. Multiple Choice
Conductors transfer the kinetic energy of particles and some transfer better than others, like metal. Insulators are poor conductors, so we use insulators when we want to separate heat from other areas, like insulation in a home or a styrofoam cup. Conductors are materials that...
If an insulator is doing it's job well, the temperature of an object over time should...
rise slowly; cold drink absorbs heat & begins moving to higher temperature, slowly
lower quickly; hot cocoa heat leaves object, quickly.
show very little change; the heat does not move or moves very slowly to cooler temperatures
rise quickly; cold drink absorbs heat, rapidly.
- 21. Multiple Choice
Why do you want to live in a home with good insulation during the cold winter months?
The insulation will keep you cool during winter.
If there is good insulation, the thermal energy will not be able to move easily from inside the warm home to the cool areas outside the building.
If there is not good insulation, the air inside the home will become too hot.
A house with good insulation will keep the warm air in the attic.
- 22. Multiple ChoiceUNIT of HeatCELSIUSFAHRENHEITCALORIEKELVIN
- 23. Multiple ChoiceUNIT of TEMPERATUREJOULESKILOMETERCALORIECELSIUS
- 24. Multiple Choice
What is the rule?
naturally flows in one direction only: from hot toward cold.
naturally flows in one direction only: from cold toward hot.
- 25. Multiple Choice
Classify: Which type of energy transfer is occurring at each lettered area? Indicate A, B, C order.
conduction, convection, radiation
conduction, radiation, convection
convection, radiation, conduction
convection, conduction, radiation.
- Answer choicesTagsAnswer choicesTags