Font size
Worksheetsgrade 7 physical LONG QUIZ
Total questions: 56
Worksheet time: 42mins
______ is heat transfer or movement by direct contact and is usually through solids.
Conduction
Convection
Radiation
Heat that is transferred or moved in circular currents through fluids is called _____.
Conduction
Convection
Radiation
In a pot of water that is heating on the stove (fogão), hot water sinks to the bottom and cold water rises to the top.
True
False
Heat from a light bulb (lâmpada) is an example of _____.
Conduction
Convection
Radiation
A huge rock at the park gets hot during the day. The rock was warmed by the Sun through _____.
Conduction
Convection
Radiation
If you lay on the hot rock from the question above, you get warmed by _____.
Conduction
Convection
Radiation
Which statement is true?
The quicker a molecule moves, the colder it is.
The slower a molecule moves, the warmer it is
The quicker a molecule moves, the warmer it is.
The movement of molecules doesn't affect temperature.
What is the energy of the movement of particles in a substance? (Choose all that apply)
Potential energy
Kinetic energy
Thermal energy
Temperature
In heat transfer, the heat always moves from the _____ object to the _____ object.
warmer to cooler
cooler to warmer
warmer to warmer
cooler to cooler
Heat stops being transferred between objects when _____. (Choose all that apply)
some amount of time has passed
the objects reach thermal equilibrium
the temperature of the objects becomes very far apart
the temperature of the objects becomes the same.
Heat and temperature are the same thing.
True
False
A thermometer measures temperature of hot water because ___ (Choose all that apply)
heat is transferred from the water to the thermometer
the particles in the thermometer begin moving faster
the particles in the thermometer expand
the water cools down to reach thermal equilibrium with the thermometer.
Smoke (fumaça) rises over a campfire because _____.
heated gas rises
heated gas goes down
the heated gas conducts heat to space
smoke follows beauty
Humans are great at measuring the exact temperature of objects.
True, humans have a great sense of temperature
False, humans have no idea what temperature objects are
False, humans are good at measuring differences in temperature.
When you open the fridge and your mom yells at you to close it because you are letting all the cold out, why is she incorrect.
She's not, mom is always correct.
She's not, because you are letting the cold out.
Because heat always transfers from warm to cold.
Because opening the fridge has no effect on the temperature of the inside of the fridge.
When you touch something that feels cold,
it melts
it freezes
coldness moves from the cold object to your hand
heat from your hand moves to the cold object.
Choose the letter of the correct answer.
1. What method of heat transfer requires direct contact between objects?
Convection
Radiation
Conduction
Sublimation
2. Which of the following materials will undergo convection?
Liquid and gas
Gas and solid
Solid and liquid
Gas only
3. How does the heat of the Sun reaches the Earth?
Thermal expansion
Conduction
Convection
Radiatiion
4. The occurrence of breeze is a manifestation of what method of heat transfer?
Convection
Conduction
Radiation
Thermal expansin
5. You are holding a metal wire on one end, while the other end is placed over the flame. Very soon, the wire is too hot to handle. What method of heat transfer is taking place?
Convection
Conduction
Radiation
Sublimation
- Heat transfer by Convection occurs ________________.
only in gases
only in liquids
only in solids
in gases and liquids
When you touch a piece of ice with your finger, energy flows _______.
from your finger to the ice
from the ice to the finger
both ways
energy does not flow
The woman is cooking a noodle soup. How does the heat travel through the pan?
Radiation
Dispersion
Convection
Conduction
The lady is cooking a noodle soup. How does the heat travel through the soup?
Radiation
Dispersion
Convection
Radiation
In convection in gases, what happens with the cold air?
Cold air rises
Cold air sinks
Cold air moves up and down
Cold air moves side ward
Wind is defined as moving air. It is caused by unequal heating of the Earth"s surface. What method of heat transfer is taking place in this phenomena?
Convection
Conduction
Radiation
Dispersion
What method of heat transfer does not require a medium?
Conduction
Convection
Radiation
Dispersion
What happens with air if temperature increases?
the air rises
the air sinks
the air move side ward
the air move vertically
Heat transfer is related to change in temperature. This statement is ______.
TRUE
FALSE
MAYBE
UNDECIDED
Heat is an energy that is transferred from one object to another due to ______________.
difference in temperature
similarities with the temperature
fluctuating temperature
Both A and B
As part of a lab experiment, Tasha drops a metal cube into a beaker of water, as shown in the figure below.
After energy in the form of heat transfers between the substances, what is the final temperature of the water?
The final temperature is 25 °C because there is more water than metal.
The final temperature is 50 °C because the metal warms the water to the temperature of the metal.
The final temperature is between 25 °C and 50 °C because energy is transferred from the metal to the water.
The final temperature is between 25 °C and 50 °C because most of the thermal energy is lost to the air around the substances.
The water in Mario’s swimming pool absorbs energy as heat during the day. Which of the following would the water in the pool be most likely to do?
condense
evaporate
freeze
melt
Emerson places a beaker of water on a hotplate and turns the hotplate on. The temperature in the room is 25 ºC. After the water heats to 75 ºC, she adds pieces of ice to the beaker.
Which of the following describes a transfer of heat energy that occurs during this experiment?
from the air to the water
from the ice to the beaker
from the water to the ice
from the water to the hotplate
How does the thermal energy of the liquid in the larger beaker compare to the thermal energy of the liquid in the smaller beaker?
The liquid in the larger beaker has less thermal energy than the liquid in the smaller beaker.
The liquid in the larger beaker has more thermal energy than the liquid in the smaller beaker.
The liquid in the larger beaker has the same amount of thermal energy as the liquid in the smaller beaker.
The exact volume of the liquid in each beaker must be known to compare the thermal energy of the liquids.
Which description defines heat?
total thermal energy of an object or substance
change in the temperature of a substance in degrees Celsius
energy transferred between objects at different temperatures
average kinetic energy of the particles that make up a substance
The pan is made of iron. The handle is NOT too hot to touch. What might the pan's handle be made of?
copper
aluminum
wood
iron
Rahma got an ice cream from her mom. The ice cream melts under the sun because the ice cream ___________.
gains heat from the sun
loses heat to the sun
cannot withstand the heat from the sun
produce too much heat
Heat loss causes matter to ________. Heat gain causes matter to ________.
contract ; expand
expand ; contract
stay ; change
change ; stay
A device that measures temperature.
A temperature scale that is used mostly in United States.
According to it, water freezes at 32 degrees and boils at 212 degrees.
Celsius
Fahrenheit
Kelvin
All of them
Mariana is at the beach with her parents so she see on a clock that the temperature is 104 ºF, she asks his father what is the temperature in celsius. He father says:
279,5 ºC
40 ºC
55,5 ºC
104 ºC
Juanita tells to his mother that she wants to go some day to iceland to see beautiful landscape, but his mother says that the temperatures there are around 280 K on may, Juanita convert to Celsius and get:
44.33 ºC
280 ºC
7 ºC
89 ºC
A piece of cheese that melts as heat is transferred from the meat to the cheese is an example of what?
Radiation
Conduction
Convection
Taking a hot air balloon ride is an example of what?
Radiation
Conduction
Convection
Taking a trip to the beach and falling asleep under the sun, resulting in a sunburn is an example of what?
Radiation
Conduction
Convection
True or False
Heat transfer is the transfer of heat from cooler objects to warmer objects.
True
False
Conduction is how heat passes through objects by...
Fluids
Direct Contact
Empty Space
Convection is how heat transfers through...
Fluids
Direct Contact
Empty Space
Radiation is how heat transfers through...
Fluids
Direct Contact
Empty Space
What is the circular motion of hot air rising and cold air sinking?
Radiation
Convection Currents
Electromagnetic Waves
Conduction
True or False
The hotter the temperature the faster the molecules move around.
True
False
What is the measure of how hot or cold something is?
Thermometer
Temperature
Thermal Energy
