When you put ice cubes in your hand, they flow ...
Heat from the ice to your hand
Cold from the ice to your hand
Cold from your hand to the ice
Heat from your hand to the ice
Two equal masses of water and oil at the same temperature are placed in two identical containers. If the two containers are placed together on the surface of an electric heater and the temperature of the oil reaches T within a time of t0, then the temperature of the water reaches T within a time of .....
Greater than t0
Less than t0
Equal to t0
The answer cannot be determined
Which pair of the following physical quantities is measured in the same unit ...
Amount of heat and internal energy
Specific heat and temperature
Amount of heat and temperature
Internal energy and temperature
If you know that the boiling point of ethyl alcohol is 78°© on the Celsius scale, calculate its boiling point on the Kelvin scale
135 K
531 K
351 K
195 K
n insulated aluminum container with a mass of 20 grams containing 150 grams of water at a temperature of 20°©. A metal piece with a mass of 96 grams and a temperature of 100°© was dropped into the water. If the final temperature of the system is 25°© and the specific heat of the water and aluminum are respectively 4200 j/kg.k /900 j/kg.k
The specific heat of the metal piece is equal to .... j/kg.k
1440
450
960
720
Large bodies of water work to moderate the temperature of the surrounding areas
False
True
The specific heat of water is a crucial factor in the sustainability of marine life
Two bodies 1, 2 of the same material and their masses m1, m2 respectively, if each of the two bodies gains an amount of heat of Q and the temperature of the two bodies rises by 5°© / 10°© respectively, then the ratio between the masses of the two bodies m1/m2 is equal to ....
1/1
4/1
1/2
2/1
Which of the following has the mass unit that has the ability to store thermal energy for a longer period immediately after sunset ...
Atmospheric air
Mountain rocks
Coastal sand
Oceans
The internal energy of a quantity of water with a mass of 1 kg is greater at a temperature of .....
340° K
40° C
300°K
4°C
A body with a mass of 150 grams gained an amount of heat of 8073 J, so its temperature rose from 30°© to 90°© Using the table opposite, what is the material of the body ....
Material
heat
Aluminum
897
Copper
385
Iron
Lead
130
A quantity of water with a mass of 0.5 kg was heated so that it gained a quantity of heat at a rate of 4200 j per minute. If the specific heat of the water is 4200 j/kg.k, then the time required to raise the temperature of this quantity of water from 25°© to 85°© is equal to ....
1 minute
0.5 minutes
3 minutes
6 minutes
Which of the following happens to a piece of iron with a temperature of -10°c when placed in an insulated container containing water with a temperature of 10°c .....
The specific heat of iron decreases
The speed of iron molecules increases
The internal energy of the piece of iron decreases
The density increases Iron
A body with a mass of 2 kg and a temperature of 27°C and the specific heat of its substance 2×10³ j/kg.k gained an amount of heat of 10⁴j then the body temperature .....
Increases to 325 K
Increases to 235 K
Increases by 2.5 K
Decreases to 100 K
The opposite table records the values of the specific heat of some materials. The following are the masses of these materials. Which of these masses requires the least amount of thermal energy to change its temperature by 2k?
Substance
specific heat
Water
4200
250 grams of copper
50 grams of water
200 grams of iron
100 grams of aluminum
The suitable aquatic environment for coral reefs to flourish is ....
Warm deep
Cold deep
Warm surface
Cold surface
The amount of heat required to raise the temperature of 1 kg of a substance by one degree Celsius ……
Specific heat of the substance of the body
Temperature
Internal energy of a body
Amount of heat
Which of the following does a high value cause the water temperature not to change at a rapid rate in large bodies of water ....
Water specific heat
pH value of water
Water density
Water salinity
A piece of aluminum with a mass of 0.3 kg changed its temperature from 20°© to 253 K. If the specific heat of aluminum is 897 J/kg.k, then the piece of aluminum has .....
Gained an amount of heat of 62700.3 J
Lost an amount of heat of 10764 J
Gained an amount of heat of 10764 J
Lost an amount of heat of 62700.3 J
A body with a temperature of 220k was changed to -3c, then the average kinetic energy of the body's particles is .....
Decreases
Increases
Does not change
The internal energy of a body is equal to ....
The average kinetic energy of the body's molecules
The difference between the kinetic energy of the body's molecules and their potential energy
The average potential energy of the body's molecules
The sum of the kinetic energy of the body's molecules and their potential energy
The thermal energy that is transferred from hot bodies to cold bodies is called
Specific heat
Internal energy
If the amount of heat gained by a body doubles, its specific heat will be ....
Decreases by a quarter
Increases by double
Remains constant
Decreases by half
Assuming that the specific heat of water is low, what is the effect of this on marine organisms?
If the specific heat of water is low, it will lead to rapid fluctuations in temperature, which postively affects marine organisms and their ability to survive.
If the specific heat of water is low, it will lead to rapid fluctuations in density, which postively affects marine organisms and their ability to survive.
If the specific heat of water is low, it will lead to rapid fluctuations in density, which negatively affects marine organisms and their ability to survive.
If the specific heat of water is low, it will lead to rapid fluctuations in temperature, which negatively affects marine organisms and their ability to survive.