Ocean Floor Lesson

The ocean makes up about ________ % of the Earth's surface. 

• 100%
• 53%
• 70 %
• 90%

When you are building a sand castle on the beach, what feature are you standing on? 

• abyssal plain
• continental shelf
• seamount
• continental rise

Which of the following describes a trench? 

• it rises above the water
• flat, low lying area of the ocean floor
• a stretch of underwater mountains
• deep cuts in the ocean floor, canyon-like 

What is letter C pointing to? 

• abyssal plain
• seamount
• mid-ocean ridge
• continental shelf

Letter D is pointing to the...

• continental slope
• continental shelf
• trench
• mid-ocean ridge

Which letter is pointing to a trench?

• A
• D
• G
• B

The tops of underwater mountains that show above the surface of the ocean form  _______________. 

• islands
• trenches
• mountains
• coral reefs

Some ______________ of the ocean floor are mountains, valleys, trenches, plains, and even volcanoes. 

• geography 
• features
• floor
• animals 

The abyssal plain makes up most of the ocean _____________. 

• mountain ranges
• islands
• floor
• features

The shoreline is where ____________ and __________ meet. 

• land and ocean
• ocean and lakes
• rivers and mountains
• continental slope and continental rise