Middle School Science Review 3

What kind of wave is pictured below?

• compressional wave
• transverse wave
• sound wave
• mechanical wave

Which letter represents wavelength?

• A
• B
• C
• D

Which letter represents amplitude?

• A
• B
• C
• D

True or False. All the cells in an animal look the same and perform similar functions.

• True
• False

Which organelle is in a plant cell but not in an animal cell?

• cytoplasm 
• chloroplast 
• mitochondrion
• cell membrane

This organelle provides extra support for the plant cell and gives in shape.

• chlorophyll
• chloroplast
• cell wall
• vacuole

Mountains are formed by the movement of tectonic plates. How long does it take for mountains to form?

• about one year
• hundreds of years
• thousands of years
• millions of years

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

_{What can scientists learn from the sequence of rock layers?}

• Geologic history of that area
• Future geological events
• the number of organisms that live in the area
• the impact that hikers have had on an area.

Which of the following is the oldest?

• Layer L
• Intrusion D
• Intrusion H
• Layer E