Listening to Earth_FrmAst

What is the main focus of Bob Dziak's study?

• Ocean currents

• Plate boundaries

• Marine life

• Weather patterns

Tags

NGSS.MS-ESS2-5

Bob Dziak uses hydrophones to study the ocean. What are hydrophones?

• Powerful microphones

• Underwater cameras

• Ocean currents

• Marine animals

Tags

NGSS.MS-PS4-2

Sound travels easily into the deepest parts of the trench if the source is (a)   .

• Directly over the trench

• Far from the trench

• Near the surface

• In the air

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Hydrophones were sent how many kilometers down into the ocean?

• 5.99 km

• 10.99 km

• 15.99 km

• 20.99 km

Tags

NGSS.MS-PS4-2

What is the significance of the Challenger Deep in Dziak's study?

• It's the shallowest part of the ocean

• It's the deepest place in the ocean

• It's where marine life is most abundant

• It's where weather patterns are studied.

What happens at convergent boundaries?

• A) Plates move away from each other

• B) Plates move toward each other

• C) Plates slide past each other

• D) Plates remain stationary.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What is a mid-ocean ridge?

• A mountain range on land

• A deep trench in the ocean

• A chain of volcanoes under the ocean

• A plateau on the ocean floor.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What do scientists use to listen to ocean boundaries?

• Telescopes

• Hydrophones

• Seismographs

• Radars

Which of the following activities is common at both convergent and divergent boundaries?

• Formation of trenches

• Earthquakes

• Formation of mid-ocean ridges

• Formation of plateaus.

Tags

NGSS.MS-ESS3-2

What is the purpose of lowering a hydrophone into the ocean?

• To record sound

• To measure temperature

• To track fish

• To study ocean currents.

Tags

NGSS.MS-PS4-2