Ocean Practice Test

How much of Earth's total water is ocean?

• 66%
• 76%
• 86%
• 96%

In what way do we get fresh water from the oceans?

• we filter it
• it's already fresh
• the water cycle
• we don't

Which of these things DON'T we get from the ocean?

• acid rain
• weather
• oil
• medicine

How do we get oxygen from the ocean?

• water cycle
• photosynthetic organisms
• oxygen dissolves into the atmosphere
• whale blow holes

Which of the following is NOT a discipline of oceanography?

• physical
• chemical
• biological
• geographical

What does physical oceanography study?

• animals in the oceans
• undersea volcanoes
• tides, waves, and currents
• chemicals and reactions in seawater

How much of the ocean has not been explored?

• 5%
• 25%
• 85%
• 95%

About how long ago was the first recorded sea voyage by the Egyptians?

• 5000 years ago
• 4000 years ago
• 2000 years ago
• 1000 years ago

What was the main motivation for early sea travel?

• exploration
• adventure
• trade
• information

Who were the first to embark on open-ocean ocean exploration?

• Egyptians
• Greeks
• Phoenicians
• Polynesians