Semester Exam- Fall 2024

Front

What are the five oceans of the world?

Back

Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (or Antarctic) Ocean, Arctic Ocean.

Front

What is the average depth of the ocean?

Back

4000 meters.

Front

What is the primary source of Earth's oxygen?

Back

Photosynthesis carried out by algae and aquatic plants.

Front

What are the grid lines running north to south on a map called?

Back

Longitude.

Front

What percentage of Earth's water is freshwater?

Back

3%.

Front

What is the largest ocean on Earth?

Back

Pacific Ocean.

Front

What is the term for the process by which plants convert sunlight into energy?

Back

Photosynthesis.

Front

What is the significance of the thermocline in oceanography?

Back

It is the layer in a body of water where the temperature changes rapidly with depth.

Front

What is the difference between latitude and longitude?

Back

Latitude measures north-south position, while longitude measures east-west position.

Front

What is the role of algae in aquatic ecosystems?

Back

Algae produce oxygen and serve as a primary food source for many marine organisms.