Science Exam #2
The relationship between the temperature and the total energy of a system depends on all of the following EXCEPT... A. The color of matter present. B. The type of matter that is present. C. The amount of matter present. D. The state of matter present.
A.
Thermal energy is removed from a sample of helium. All of the following changes will result from this EXCEPT--- A. The molecules will become more packed. B. The temperature of the system will decrease. C. Total energy in the system increases. D. The molecules of the system will lose kinetic energy
C.
CONVECTION, CONDUCTION, or RADIATION? Hot chocolate is stirred with a spoon and the spoon gets hot.
Conduction
CONVECTION, CONDUCTION, or RADIATION? The sidewalk burns your bare feet in the summertime.
Conduction
CONVECTION, CONDUCTION, or RADIATION? You burn your hand by touching a hot stove.
Conduction
CONVECTION, CONDUCTION, or RADIATION? A hot air balloon rises.
Convection
CONVECTION, CONDUCTION, or RADIATION? The air near the ceiling in a room is warmer than the air near the floor.
Convection
CONVECTION, CONDUCTION, or RADIATION? The material in a lava lamp rises and falls.
Convection
CONVECTION, CONDUCTION, or RADIATION? You warm your feet in front of a fire.
Convection
When there is not enough ----, change in a substance cannot occur.
Energy
what occurs when an object's energy moves from potential energy to kinetic energy
Energy transfer
Thermal energy exchange between objects of different temperatures.
Heat
energy that is shifted from warmer to cooler temperature between to substances
Heat
An investigation to determine which material can maximize heat energy transfer would most likely be...
Hot water placed in containers made of different substances
How is the term "heat' used differently in science as opposed to everyday language
In everyday language heat is used as a temperature but in science heat is when energy is transferred from a warmer object to a cooler one.
CONVECTION, CONDUCTION, or RADIATION? The sidewalk increases in temperature on a sunny day.
Radiation
CONVECTION, CONDUCTION, or RADIATION? The sun warms your body on a cold day
Radiation
Thermal energy that is transferred through empty space.
Radiation
what is a measurement of the average kinetic energy of the particles in an object.
Temperature
When thermal energy is removed from a system, what happens to the temperature and the average kinetic energy of the system?
Temperature decreases, average kinetic energy decreases
What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?
The molecules gain kinetic energy, move farther apart and become a gas.
Temperature is not a direct measure of the thermal energy of a system. The total thermal energy of a system depends on its temperature and what other factors?
The number of atoms in the system and conductivity of the material
What happens to solid ice when the amount of thermal energy increases?
The temperature of the solid ice decreases while the thermal energy increases.
if two objects have different temperatures, in which direction will heat move? For how long will it travel?
The temperatures of the two objects will go from the hottest object to the coolest object. It will transfer until both objects are the same temperature.
What does thermal energy of a system depend on?
The total thermal energy depends on the kinetic energy of the particles that make up matter
In science the term "heat" is used to describe what?
The transfer of thermal energy from one object to another.
The relationship between the temperature of a system and the total energy of the system depends on what factors?
The type, states, and amount of matter in the system.
----- energy always moves from object with higher temperatures to objects with lower temperatures
Thermal
The energy of the motion of the particles in the matter
Thermal energy
Explain how thermal energy , kinetic energy, and temperature aren related in a substance.
They all use energy of motion in a substance
The total thermal energy of a system depends jointly on the temperature, total number of ---- in the system, and the ---- of the material.
atoms, and state
Thermal energy that is transferred when two objects of different temperatures touch
conduction transfer
Materials such as metal and wire are good ---- because heat can easily transfer through them
conductors
CONVECTION, CONDUCTION, or RADIATION? Macaroni rises and falls in a pot of heated water.
convection
The transfer of heat by the movement of currents of liquid or gas
convection
As the distance increases, the temperature ---
decreases
As the distance decreases, the temperature -----
increases
energy of motion
kinetic energy
When a ice cube melts in a glass of water , a current forms in which heat energy moves from particles with a higher temperature to particles with a -------temperature
lower
Insulators ---- thermal energy transfer.
minimize
The energy that is stored in a object
potential energy
The average kinetic energy of all the particles in a material
temperature
Determined from the sum of potential and kinetic energy in a substance
total internal energy
