7th Grade: Q1-Q3 Life Science Review

Most scientific experiments should -

• only be repeated once

• be only conducted in a field

• be only conducted inside a a lab

• contain repeated trials

For scientific data to be considered accurate and reliable, most scientific experiments should be -

• conducted as many times as possible

• conducted 3 times

• repeated no more than 2 times

• conducted only 1 time

What is the correct mass for the can?

• 16

• 476

• 76

• 6

The metric units of milliliter and liter are used to measure -

• Density

• Length

• Mass

• Volume

The metric units of gram, kilogram, and milligram are used to measure -

• Mass

• Volume

• Length

• Density

The metric units of meter, centimeter, and kilometer are used to measure -

• Length

• Density

• Volume

• Temperature

The metric units of Celsius and Kelvin are used to measure -

• Volume

• Desnity

• Temperature

• Mass

Identify the dependent variable in the hypothesis

Hypothesis: If I spend more time at the gym then I will get in better shape.

• Time spent in the gym

• Location of the gym

• Improved fitness

• Listening to music at the gym

Factors in an experiment that must be kept the same are called-

• constants

• hypothesis

• independent variable

• control

The tropical rain forest has an average daytime temperature of 34C. The tundra has an average summer temperature of 12C. The tropical rain forest receives an average yearly rainfall of 400 cm while the tundra receives 42 cm per year. Which of the following conclusions would be most valid considering this data?

• Both can be found near the equator

• Both can be found in polar regions

• The same species of organisms could be found on both

• The variety and types of organisms would differ significantly.