1) What does aquatic mean? a) owned by Aquaman b) water-based c) really cold 2) What are the two types of aquatic ecosystems? a) fish and frogs b) tundra and rain forest c) freshwater and saltwater 3) What is another name for "marine" ecosystem? a) water b) saltwater c) freshwater 4) The abiotic factors that affect aquatic ecosystems are ____________. a) sunlight, animals, temperature and salt content b) sunlight, salt content, size and oxygen c) sunlight, salt content, oxygen and temperature d) temperature, oxygen, size and animals 5) Floating algae, which produces half of the oxygen on Earth, is known as _______________. a) plankton b) phytoplankton c) coral d) red tide 6) Only ___________ of the water on Earth is freshwater. a) 3% b) 20% c) 50% d) 70% 7) Water flows slowly in a _____________. a) pond b) lake c) stream d) river 8) When streams come together, they form a larger stream called a ________________ which often have strong currents. a) pond b) lake c) stream d) river 9) A small area of still (standing) fresh water is a _______________. a) pond b) lake c) stream d) river 10) A larger, deeper area of standing (still) water is a _________________. a) pond b) lake c) stream d) river 11) A(n) _______________________ is found where the fresh water of a river meets the salt water of an ocean. a) pond b) lake c) estuary 12) Between the high-tide line and the lowest low-tide line, you will find the ___________________. a) surface zone b) intertidal zone c) neritic zone d) deep zone 13) The shallow water found below the low-tide line and extending over the continental shelf is the ______________. a) surface zone b) intertidal zone c) neritic zone d) deep zone 14) The __________________ extends from the water's surface to about 200 meters deep. a) surface zone b) intertidal zone c) neritic zone d) deep zone 15) The ___________________ is located beneath the surface zone and extends to the ocean floor. a) surface zone b) intertidal zone c) neritic zone d) deep zone

Aquatic Ecosystems

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