Topic 5

Between which two points did the temperature change the most rapidly

A and B (solid to liquid)

Which material would require the most heat energy to increase the temperature of 1 gram of the material one degree Celcius

basalt

During which process of energy exchange does cold air displace warmer air

convection

Which type of surface would most likely be the best reflector of electromagnetic energy

light colored and smooth

How much energy was gained or released as 10g of H2o went from point B to point C

334 J/G gained

The water temperature reached 75DC after the sample had been heated approxiamately

5 minutes

At which temperature will an object radiate the greatest amount of electromagnetic energy

50DC

At which temperature would a source radiate the least amount of electromagnetic energy

5DK

A sample of water undergoes the phase changes from ice to vapor and back to ice. During which phase change does the sample gain (absorb) the most amount of heat energy

B ( Water to Water Vapor)

The greatest amount of energy was added to the water between points

D and E

A boulder falls freely from point A to point B. Which statement best explains the relationship between the height of the boulder and it's potential and kinetic energy as it falls?

Its potential energy decreases and its kinetic energy increases

Which statement best explains why the amount of heat energy gained in cup B is less than the amount of heat energy lost by cup A

The aluminum bar is losing some heat to the air

An observer noted that even though the ice on a pond was melting, the temperature of the liquid water in the pond remained constant until all the ice melted. Which statement best explains this situation

The heat energy is being used to change the solid ice to liquid water

An object was added to a beaker of water. Using a thermometer, a student observed an immediate increase in water temperature. What is the best interpretation of this observation

The object was an energy source to the water and to the thermometer

The diagram at the right represents a glass of ice on a warm day. Which statement describes the principal of energy flow that is occurring in the glass of ice water

The water is releasing energy to the ice

The change from the vapor phase to the liquid phase

condensation

Which process results in a release of latent heat energy

condensation of water vapor

Which process transfers heat from one part of a solid object by direct contact when molecules collide

conduction

The movement of the water shown by the arrows is most likely caused by

density differences

The line from D to E on the graph represents a phase change. Between points D and E, the water was

evaporating

The type of electromagnetic energy which travels in the shortest wavelength is

gamma rays

Two identical objects are both painted different colors, one black and the other white. If both objects are in the sunlight, the amount of energy absorbed by the black compared to the amount absorbed by the white is

greater

As the abillity of a substance to absorb electromagnetic energy increases, the ability of that substance to radiate electromagnetic energy will

increase

As infrared radiation strikes the Earth's surface it is reradiated back into space with a longer wavelength and

lower frequency

By which process does light travel through space

radiation

As heat energy is added to an open container of boiling water, the temperature of the boiling water will

remain the same

The difference between the amount of heat energy lost by cup A and the amount gained by cup B could be decreased by

replacing the 20 cm aluminum bar with a 10 cm aluminum bar

what is the major source of energy for the Earth

the Sun

When the light source is on, the amount of radiant energy striking the black container, as compared to the amount striking the shiny container is

the same

The environment is in dynamic equilibrium when it is gaining

the same amount of energy as it is losing

Which substance has the highest specific heat

water

Infrared, ultraviolet, and visible light are all part of the solar spectrum. The basic difference between them is their

wavelength