Mapping the Ocean Floor Notes

Multiple Choice

How did early ocean explorers determine the depth of the ocean?

• Explorers dropped a weight tied to a rope into the ocean

• Explorers swam to the bottom of the ocean

• Explorers used sound waves

• Explorers estimated the depth by looking at the darkness of the water

Multiple Choice

What percentage of the ocean has been mapped in detail?

• Less than 5%

• 5%-10%

• 25%

• More than 50%

Open Ended

Why is mapping the ocean in detail important?

Multiple Choice

With current technology, how long would it take to map the ocean in detail?

• Less than 1 ship-year

• 100 ship-years

• 200 ship-years

• 500 ship-years

Multiple Choice

How much money will it cost to map the ocean floor in detail?

• $1 Million

• $1 Billion

• $3 Billion

• $30 Billion

Multiple Choice

What type of technology do scientists use to map the ocean floor now?

• Light Waves

• Acoustic (Sound) Waves

• Rope with a Large Weight

• Magnetic Fields

Open Ended

What is one challenge to mapping the ocean floor in detail?

Multiple Choice

When do scientists want to have 100% of the ocean floor mapped in detail?

• 2025

• 2030

• 2045

• Next Year