A metal spoon was placed in a dish of ice cream and became cool. Which correctly describes the heat transfer process that resulted in the cooling of the spoon?

• conduction, because the spoon was in contact with the cold ice cream

• convection, because the spoon was in contact with the cold ice cream

• conduction, because cold air currents affected the temperature of the spoon

• convection, because cold air currents affected the temperature of the spoon

A cold air mass moves underneath a warm air mass causing the warm air mass to rise. This event can best be identified as...

• a cold front

• a warm front

• an occluded front

• a stationary front

Why is water known as the "universal solvent"?

• it dissolves all known substances

• it dissolves only solid substances

• it dissolves the greatest number of substances

• it dissolves substances faster than all other solvents

Which two processes do arrows 1 and 2 represent in this diagram?

• 1:absorption and 2:convection

• 1:absorption and 2:reflection

• 1:conduction and 2:reflection

• 1:conduction and 2:convection

How many first-order consumers are in this food web?

• 2

• 3

• 4

• 5

The allele in rabbits for short hair (H) is dominant to long hair (h). What are the probable offspring phenotypes for a cross between parents that are both Hh?

• 25% HH; 50% Hh; 25% hh

• 50% HH; 50% hh

• 50% short hair; 50% long hair

• 75% short hair; 25% long hair

Which process is the original source of genetic variation that allows for natural selection?

• pollination

• binary fission

• mutation

• replication

Which set of coefficients will balance this equation?

• 1, 4, 2, 1

• 1, 2, 1, 1

• 2, 2, 1, 2

• 4, 3, 2, 4

How many different elements are involved in the chemical reaction shown?

• 7

• 4

• 13

• 3

Fiber-optic cables are designed to transmit...

• heat

• sound

• electricity

• light