MAP General Science (Grades 6-8) 2

Question 1

What type of rock is formed when magma cools and solidifies?

Accepted Answer

Igneous

Answer

Igneous rock forms when magma (underground) or lava (on Earth's surface) cools and solidifies. The word 'igneous' comes from Latin for 'fire.'

Question 2

What is the difference between weather and climate?

Accepted Answer

Weather is day-to-day atmospheric conditions; climate is the long-term pattern

Answer

Weather describes short-term atmospheric conditions (today's temperature, rain). Climate describes the long-term average weather patterns of a region over 30 or more years.

Question 3

Which of the following best describes the process of natural selection?

Accepted Answer

Organisms with traits better suited to their environment are more likely to survive and reproduce

Answer

Natural selection is the process by which organisms with favorable traits for their environment are more likely to survive, reproduce, and pass those traits to offspring.

Question 4

A wave has a frequency of 5 Hz and a wavelength of 4 meters. What is its wave speed?

Accepted Answer

20 m/s

Answer

Wave speed = frequency times wavelength = 5 Hz times 4 m = 20 m/s.

Question 5

What happens to the density of water when it freezes into ice?

Accepted Answer

Density decreases because ice forms an open crystalline structure

Answer

When water freezes, hydrogen bonds arrange water molecules into an open hexagonal lattice (ice crystal structure) that is less dense than liquid water — which is why ice floats.

MAP - Measurement of Academic Progress Practice Test

MAP - Measurement of Academic Progress Practice Test

MAP General Science (Grades 6-8) 2