1) What factors can affect aquatic ecosystems? a) Wind and rain b) Sunlight and temperature c) Temperature and humidity d) Rain and sunlight 2) Which are the 2 types of aquatic ecosystem? a) Desert and forest b) Mountain and Valley c) Freshwater and Saltwater d) Hot and Cold 3) What can freshwater be used for? a) Feeding fish b) Growing trees c) Healing illness d) Drinking 4) What happens to the speed of flowing water as it moves from its source to its mouth? a) It stays the same speed b) It slows down as it reaches the mouth c) It stops moving d) It speeds up 5) Which of the following is an example of still water? a) A stream b) A river c) A lake d) A waterfall 6) Why can’t salt water be used for drinking? a) It contains too many nutrients b) It evaporates too quickly c) It has too much salt, which is harmful d) It freezes at a higher temperature 7) A difference between the coast and the open sea? a) The open sea has no plant life at all b) Sunlight reaches coastal waters more than in the open sea c) Only bacteria live in coastal waters d) Coastal waters are deeper than the open sea 8) Why do only unicellular algae live at the surface of the open sea? a) The open sea has too much freshwater b) There is no oxygen in the open sea c) The temperature is too hot for multicellular algae d) The water is too deep for sunlight 9) Where would you expect to find more plant life? a) At the bottom of the ocean b) By the coast c) In the open sea d) In the middle of a deep-sea trench 10) Which of the following factors can affect terrestrial ecosystems? a) Cloud shapes and star positions b) Population size and road networks c) Temperature, humidity, relief, and soil d) Gravity, magnetism, and sound waves 11) Where is the temperature of water highest on Earth? a) Near the Equator b) In mountain lakes c) Near the poles d) In open water 12) Where do plants not grow? a) In the ocean b) Near the poles c) In the desert d) Near the equator 13) Why is humidity good for ecosystems a) The rain is better for plants and animals b) It doesn't effect ecosystems c) Less humidy makes plants and animals grow faster d) High humidity dries up water sources 14) What does relief mean in terms of ecosystems a) How happy the plants and animals are  b) How cold the land is c) How hot the land is d) Whether the ground is flat or steep 15) Which area would likely have the most plant and animal life? a) A dry desert with little moisture b) A frozen polar region c) A region with no humidity and no rainfall d) A region with high humidity and frequent rainfall 16) How does relief affect plants in an ecosystem? a) It is harder for plants to grow on steep land than on flat land b) Relief has no effect on plant growth c) Plants grow better on steep land than on flat land d) Steep land always has more water than flat land 17) How does soil affect plants? a) Plants grow best in dry, rocky soil b) Soil has no effect on plant growth c) Plants only need sunlight, not soil, to grow d) Plants grow better in deeper and more fertile soils 18) What are the 2 types of ecosystem? a) Natural and artificial b) Forest and mountain c) Aquatic and terrestrial d) Static and dynamic 19) Where do multicellular algae live? a) Still water b) Coast c) Open sea d) Flowing water 20) What are the 2 types of algae in aquatic ecosystems? a) Freshwater and saltwater b) Green and red c) Unicellular and multicellular d) Floating and sinking

Ecosystems quiz

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