Physical Science midterm

Front

What is the independent variable in the graph below? Speed (m/s), Time (s)

Back

Time (s)

Front

What is the dependent variable in the graph below?

Back

Population (as a % of carrying capacity)

Front

What is the control in the experiment comparing two groups of students working on math problems with and without calculators?

Back

Group without calculators.

Front

An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee. The same kind of coffee, the same coffee maker, the same amount and type of water, the same perking time, and the same electrical sources were used. The statement saying, "the same coffee maker" is an example of

Back

a constant.

Front

The graph above represents an

Back

endothermic change because as time goes by temperature increases.

Front

Vaporization (boiling) is occurring at

Back

100 C.

Front

In this type of phase change, particles are

Back

speeding up

Front

The graph above represents an

Back

exothermic change because as time goes by temperature decreases.

Front

In this type of phase change, particles are

Back

moving closer together

Front

According to the graph, which item would most likely float on top of water? Gold, Aluminum, Iron, Gasoline

Back

Gasoline