Energy: Heat and Matter Topic UPDATED Exam Questions and CORRECT Answers
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Energy: Heat and Matter Topic
Institution
Energy: Heat And Matter Topic
Energy: Heat and Matter Topic UPDATED
Exam Questions and CORRECT Answers
_____________is the thermal energy that flows from one substance to another when the
substances differ in temperature. - Correct Answer- Heat
Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a f...
Energy: Heat and Matter Topic UPDATED
Exam Questions and CORRECT Answers
_____________is the thermal energy that flows from one substance to another when the
substances differ in temperature. - Correct Answer- Heat
Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few
seconds later, the marshmallow is cooked and the skewer feels warm. What most likely
happened? - Correct Answer- Thermal energy in the form of heat moved from the fire to the
skewer and marshmallow.
Shelly tells a friend that her computer needs to be fixed because it has been producing a lot of
heat and is smoking. Where is the error in her statement? - Correct Answer- Her computer is
producing thermal energy, not heat.
Which best explains why water boils in a pot sitting over fire? - Correct Answer- Thermal
energy from the fire moves to the water in the form of heat.
If a cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, how
will heat flow between them? - Correct Answer- from the cup to the hand
Heat flows from_________________substances. - Correct Answer- hot to cold
A stovetop burner on medium reaches 200°C. Which other objects will heat from the burner
flow to? Check all that apply. - Correct Answer- Incorrect recheck all that applies:
the surrounding air *
a cool pan*
a pan heated to 223°C
cool water inside a pan
someone who touches it*
What must be true about two objects if heat is flowing between them? - Correct Answer- The
objects must be different temperatures.
, Which substance is most likely to heat up the fastest? - Correct Answer- copper (specific heat
of .39 /g • C°)
The metal aluminum coils in an air conditioner conduct thermal energy from inside the house
and release it outside the house. What can be said about the coils when they are accepting the
heat inside the house? - Correct Answer- They must be cooler than the air inside the house.
How do the metal aluminum coils in an air conditioner help keep a house cool? - Correct
Answer- They insulate the house from outside thermal energy. "NC"
They conduct thermal energy from inside the house and release it outside the house.
They insulate the surrounding air from indoor thermal energy.
They conduct thermal energy from outside the house and release it inside the house.
When Object 1 came into contact with Object 2, Object 2 got warmer. What can be concluded
about the objects before they came into contact with each other? - Correct Answer- Object 1
had faster-moving particles.
How does a foam-filled winter coat help keep a person warm? - Correct Answer- It slows
down the transfer of thermal energy from outside to inside the coat. "NC"
It slows down the transfer of thermal energy from inside to outside the coat.
It speeds up the transfer of thermal energy from outside to inside the coat.
It speeds up the transfer of thermal energy from inside to outside the coat.
Which describes how fast-moving particles assist in transferring thermal energy to a cup after
hot tea is poured into it? - Correct Answer- They collide with slow-moving particles.
What must be true about two objects for conduction to take place? - Correct Answer- The
objects must be different temperatures and they must be in contact.
Conduction can occur within a single substance, but parts of the substance must have which
property? - Correct Answer- different temperatures
different textures
different particle sizes "NC"
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