A researcher examines fossils found in some rock layers. The fossils shown were found in undisturbed layers of rock. Which fossil is the youngest?

• Trilobites

• Armored fish

• Dinosaurs

• Early horses

A baby woolly mammoth was discovered frozen for 40,000 years. What type of fossil would this be?

• Mold

• Trace

• Preserved

• Carbonized

What type of rock is formed from hardened and cooled magma?

• Parent/Bed rock

• Igneous rock

• Metamorphic rock

• Sedimentary rock

Much of the evidence that is used to support evolution of life on Earth is obtained by -------.

• Studying fossils preserved in rock

• Radioactive dating of rock

• Relative dating of rock

• Absolute dating of rock

What property of this wave is represented by the letter "A"

• amplitude

• crest

• trough

• wavelength

When the frequency of a wave increases, what happens to the wavelength?

• The wavelength is not directly affected by the frequency of a wave.
• The wavelength increases.
• The wavelength decreases.
• More specific information is needed to form a conclusion about the wavelength.

A mechanical wave cannot travel through...

• a vacuum(empty space).
• water.
• air. 
• glass.

Which wave in the diagram has the greatest frequency?

• 1
• 2
• 3
• 4

Tags

CCSS.8.EE.B.5

When a wave strikes and object and bounces off. An example echo.

• medium

• refraction

• reflection

• interference

Which EM wave has the lowest frequency?

• radio
• xray
• gamma
• infrared