Energy And Matter Module Question Preview (ID: 62296)
Energy And Matter.
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The measure of the average kinetic energy of the particles of a substance is its
a) temperature
b) heat
c) thermal enrgy
d) kinetic energy
Which of the following statements about the particles in a material is true
a) Average kinetic energy of the particles increases as the temp increases
b) The average kinetic energy of the particles decreases as the temperature increases.
c) The average kinetic energy of the particles in a substance never changes.
d) There is no relationship between kinetic energy and temperature.
When a substance is cooled it usually expands.
a) true
b) false
c)
d)
If the same quantity of thermal energy is added to two different substances with the same mass, the substance with the lower specific heat will experience less of a temperature change.
a) true
b) false
c)
d)
When a pot is put on a stove, the pot gains heat by ____.
a) radiation
b) conduction
c) convection
d) condesation
You grab a bottle of water out of the refrigerator. Your hand gets cold because of which of the following?
a) conduction
b) radiation
c) convection
d) evaporation
Compared to water, most metals have low specific heats.
a) true
b) false
c)
d)
Most materials ____ when they are heated.
a) condense
b) freeze
c) expand
d) contract
At which temperature are the particles in a pencil moving the fastest?
a) 50°C
b) 40°C
c) 30°C
d) 20°C
Which of the following statements describes the particle arrangement and motion within a solid? Multiple choice question. R
a) Relatively close together, can move a little and even flow
b) Spread far apart, and move fast
c) Spread apart, move slow
d) packed tightly together, move or vibrate very little
Even if you don't touch a marshmallow to a campfire flame, holding a marshmallow near a flame causes it to toast and turn brown. Why does this happen?
a) Dust blowing through the air causes the marshmallow to brown
b) Hot air in the atmosphere cooks the marshmallow
c) Heat radiates on electromagnetic waves through the air from the fire and cooks the marshmallow
d) Smoke and soot from the fire cause the marshmallow to brown
Why would running hot water over the metal lid of a jar make it easier to open?
a) Water would get under the lid and loosen the lid
b) Hot water causes particles in the lid to speed up and move apart causing thermal expansion
c) Hot water causes particles in the lid to slow down and move closer together causing thermal expansion
d) None of the above
Kinetic energy is the energy of______________.
a) kinetics
b) stored energy
c) motion
d) humans
Which example below is an example of a thermal conductor?
a) wooden spoon
b) metal spoon
c) plastic spoon
d) none of the above
Which example below is an example of a thermal insulator?
a) plastic spoon
b) silver spoon
c) gold spoon
d) aluminum spoon
How does heat transfer between hot and cold objects by conduction?
a) Heat travels through air on waves from hotter objects to colder objects
b) Heat transfers through air on waves from colder objects to hotter objects
c) Heat transfers when two objects come in contact from the hotter object to the colder object
d) Heat transfers when two objects come in contact from the colder object to the hotter object
Potential energy is the energy of______________.
a) kinetics
b) motion
c) stored energy
d) humans
In which state do particles move fastest with little effect on each other?
a) ice
b) gas
c) liquid
d) solid
What is true of two objects when heat is transferred between them?
a) they are both hot
b) they are both large
c) they are at different temps
d) they are both cold
As the temperature of air increases, what happens to the speed of its particles?
a) The particles speed will increase because they gain more energy
b) The particle speed will decrease because they gain more energy
c) The particles speed will increase because they have less evergy
d) The particles speed will decrease because they have less energy
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