Sometimes all the response choices to a test question look similar. For example, they might have the same prefix or suffix. When all of the answer choices are similar, try answering the question BEFORE looking at the answers. Once you have answered the test item yourself, then look for the answer choice that agrees with your answer. Look for words that are correct words, but do not belong with the others.
The transfer of energy by collision of particles in a material occurs through
convection.
conduction.
radiation.
ionization.
insulation.
(Answer: B)
Choose the letter that best answers the question or completes the statement.
Which statement describes the direction of spontaneous heat flow?
Heat flows between two objects at the same temperature.
Heat flows in a vacuum by conduction.
Heat flows from an object at high temperature to one at low temperature.
Heat flows from an object at low temperature to one at high temperature.
Thermal energy can only be absorbed by cool objects.
How are refrigerants used to remove heat in a refrigerator?
The refrigerant vaporizes as it absorbs heat from the food.
The refrigerant vaporizes as it supplies heat to the food.
The refrigerant condenses as it absorbs heat from the food.
The refrigerant condenses and turns into a liquid, giving off heat to the food.
The refrigerant condenses and turns into a gas, giving off heat to the food.
The table below shows the average high and low temperatures in January and July for two cities at the same latitude. Both cities receive about the same amount of sunlight. Which city is on an island in the ocean and which city is in a desert?
City A is on an island; City B is in the desert.
Both cities are in the desert.
Both cities are on an island.
City B is on an island; City A is in the desert.
Not enough information is given.
City Temperatures |
||||
---|---|---|---|---|
January High |
January Low |
July High |
July Low |
|
City A |
26°C |
18°C |
28°C |
20°C |
City B |
32°C |
10°C |
44°C |
27°C |
Which of the following best explains why gases expand more readily than liquids or solids?
Gases have less density than solids or liquids.
Gases are lighter than solids or liquids.
Gases have a higher average kinetic energy than solids or liquids.
Gas particles have weaker attractive forces than solids or liquids.
Gases are more compressible than solids or liquids.
Which substance will have the greatest increase in temperature when equal masses absorb equal amounts of thermal energy? (Specific heats are given in parentheses.)
water (4.18 J/g•°C)
ammonia gas (2.1 J/g•°C)
ethyl alcohol (2.43 J/g•°C)
aluminum (0.90 J/g•°C)
lead (0.46 J/g•°C)
Which of the following illustrates the first law of thermodynamics?
Refrigerators make objects colder.
A bicycle pump gets warm when used.
Stoves radiate energy.
Soft drinks served with ice melt the ice.
Absolute zero cannot be reached.