How Much Do You Know About Oceanography?

1. Scientists that study the ocean are called this.

Scientists of the oceans

Ocean Scientists

Oceanographers

Weather Scientist

Oceanographers are scientists who study the ocean. They specialize in various aspects of the ocean, such as its physical properties, marine life, and the interactions between the ocean and the atmosphere. They use various tools and techniques to collect data and analyze it in order to understand the complex systems and processes of the ocean. By studying the ocean, oceanographers contribute to our knowledge of climate change, marine ecosystems, and natural hazards such as tsunamis and hurricanes.

Explanation

Oceanographers are scientists who study the ocean. They specialize in various aspects of the ocean, such as its physical properties, marine life, and the interactions between the ocean and the atmosphere. They use various tools and techniques to collect data and analyze it in order to understand the complex systems and processes of the ocean. By studying the ocean, oceanographers contribute to our knowledge of climate change, marine ecosystems, and natural hazards such as tsunamis and hurricanes.

2. Oceanographers study hydrothermal vents. What are these?

Underwater volcanoes

Rare fish

Seaweed holes

Tsunmai

Hydrothermal vents are underwater volcanoes. These are openings in the Earth's crust where hot water and minerals are released into the surrounding ocean. They are often found near tectonic plate boundaries and are associated with volcanic activity. Oceanographers study these vents to understand their geological and biological significance, as they support unique ecosystems and contribute to the chemical composition of the oceans.

Explanation

Hydrothermal vents are underwater volcanoes. These are openings in the Earth's crust where hot water and minerals are released into the surrounding ocean. They are often found near tectonic plate boundaries and are associated with volcanic activity. Oceanographers study these vents to understand their geological and biological significance, as they support unique ecosystems and contribute to the chemical composition of the oceans.

3. If you study chemical elements in seawater, you're practising which branch of oceanography?

Biological Oceanography

Physical Oceanography

Chemical Oceanography

None

The oceans perpetually cycle chemicals of all kinds through their currents

Explanation

The oceans perpetually cycle chemicals of all kinds through their currents

4. What topic does physical oceanography research?

Properties of sea water

The shallow areas where land meets water

The traits of underwater soils

The chemistry of sea water changes constantly depending on weather conditions and many other factors.

Explanation

The chemistry of sea water changes constantly depending on weather conditions and many other factors.

5. The substances in seawater, which most affect the colour reflected are:

Phytoplankton

Zooplankton

Salt

Trace metals

Phytoplankton are microscopic marine plants that contain pigments, such as chlorophyll, which give them their green color. These pigments can absorb and scatter light, affecting the color of seawater. When there is a high concentration of phytoplankton in the water, the color reflected can appear greenish. Therefore, the presence of phytoplankton is the most influential factor in determining the color of seawater.

Explanation

Phytoplankton are microscopic marine plants that contain pigments, such as chlorophyll, which give them their green color. These pigments can absorb and scatter light, affecting the color of seawater. When there is a high concentration of phytoplankton in the water, the color reflected can appear greenish. Therefore, the presence of phytoplankton is the most influential factor in determining the color of seawater.

6. How did the first researchers determine ocean depths?

They refracted light into the depths

Rope and Lead Weights

They attached rope to a large fish and released it

None

It was called sounding, and it was primitive but effective.

Explanation

It was called sounding, and it was primitive but effective.

7. Modern oceanography is typically attributed to the Challenger Expedition, which began when?

1872

1888

1891

1856

The British expedition took rock samples, recorded water temperatures and performed many other important observations.

Explanation

The British expedition took rock samples, recorded water temperatures and performed many other important observations.

8. What percentage of the world's volcanic activity occurs within the oceans?

90%

70%

50%

80%

Those volcanic eruptions have a large impact on the surrounding ecosystems.

Explanation

Those volcanic eruptions have a large impact on the surrounding ecosystems.

9. What is the approximate temperature of the deep ocean?

39 degrees Fahrenheit

42 degrees Fahrenheit

45 degrees Fahrenheit

38 degrees Fahrenheit

The deep ocean is a dark and frigid place.

Explanation

The deep ocean is a dark and frigid place.

10. How long is the Midocean Ridge

10,000 miles

50,000 miles

100,000 miles

2 miles

900 miles

The Midocean Ridge is a continuous underwater mountain range that stretches across the Earth's oceans. It is the longest mountain range on Earth, extending for approximately 50,000 miles. This ridge is formed by tectonic plate movements and volcanic activity, and it plays a crucial role in the process of seafloor spreading. The length of 50,000 miles indicates the vastness and significance of this geological feature in shaping the Earth's crust.

Explanation

The Midocean Ridge is a continuous underwater mountain range that stretches across the Earth's oceans. It is the longest mountain range on Earth, extending for approximately 50,000 miles. This ridge is formed by tectonic plate movements and volcanic activity, and it plays a crucial role in the process of seafloor spreading. The length of 50,000 miles indicates the vastness and significance of this geological feature in shaping the Earth's crust.