DL "Quiz" Physical Oceans

Which best describes the continental shelf?

• a flat underwater valley 
• a region of mountains in the deep ocean 
• a shallow area of sediment near the shore 
• a region with high water pressure 

The ocean floor 

• is always a flat bed of sand 
• has mountains, plains, and ridges like land surfaces
• is covered by the same amount of water everywhere
• covers less area than land

The ocean covers 50% of Earth's surface.

• True
• False

Where is the ocean deepest?

• ocean trench
• volcanic island
• abyssal plain 
• mid-ocean ridge

The main difference between ocean water and lake water is that ocean water contains

• oxygen
• salt
• algae
• plants

As you go deeper in the ocean, the _______ decreases. 

• water
• salinity
• temperature
• water pressure 

What do the arrows represent in the picture?

• waves
• currents
• tides

The large flat region of the ocean floor is called the 

• ocean trench
• continental shelf
• abyssal plain
• seamount 

What causes the tides to change?

• rotation of the Earth
• magic
• gravitational pull from the moon
• ocean currents

Tags

NGSS.MS-PS2-4

What is the only part of the ocean floor without tectonic activity?

• continental slope
• continental margin
• seamount
• abyssal plain