Show:
Bodies of Water
Sustaining Life
Phytoplankton
Adaptations
Mixed Bag
100
True or False: In a lake, sunlight can reach the bottom whereas in a pond sunlight cannot.
False: Sunlight can only reach the bottom in a pond because lakes are significantly deeper.
100
What 3 things does every animal (including humans) need to survive?
1) Oxygen 2) Food 3) Water
100
True or False: Phytoplankton produce oxygen yet are unimportant to the aquatic food chain.
False: Phytoplankton play a crucial role in the aquatic food chain as they provide food for a large variety of life including whales, shrimp, snails, and jellyfish.
100
What is an adaptation?
A change by which an organism/species becomes better suited to its environment.
100
What percent of life on Earth is aquatic? a)64 b)74 c)84 d)94
d) 94% of life on Earth is aquatic
200
What percentage of the Earth's surface is covered by water? a) 85% b) 60% c) 70% d) 75%
c) 70% of the Earth's surface is covered by water
200
Many species thrive in shallower waters, because...?
In shallower areas, light can penetrate and photosynthesis can take place.
200
How big are phytoplankton? a) 20cm b) 0.5-1cm c) 0.002-2mm d) 14-17cm
c) Phytoplankton range in size from 0.002-2mm
200
How do larger creatures adapt to living in salt water?
Larger creatures use the higher salt content in water by using it to support their body weight.
200
True or False: Less than 0.3% of all water on Earth is in the atmosphere to form clouds, rain, and snow.
True: Less than 0.3% of all water on Earth is in the atmosphere to form clouds, rain, and snow. 2% is frozen in our ice caps and 97% is in oceans.
300
How much of the world's water are lakes, ponds, rivers and streams?
They make up 0.02% of the world's water.
300
Why can lakes not support a wide variety of organisms?
Lakes are isolated from other water bodies and therefore, support very little life.
300
Name two of phytoplankton's main roles.
1) Photosynthesis 2) Provide nutrients within oceanic food chain
300
What have fish changed to adapt to the changing temperatures in lakes? a) Thicker gills b) Ability to change their body temperature c) Antifreeze substance in their blood
c) Overtime some small fish have developed an antifreeze-like substance in their blood to keep it flowing.
300
Why is it easier for organisms to live near rocky coasts rather than sandy coasts?
On sandy coasts the tide is carrying mud and sand constantly so a limited amount of algae and plants are able to thrive.
400
Name two differences between rivers and streams.
1) Size (Rivers are larger and deeper) 2) Speed (Streams are much faster) 3) Rivers are formed when streams connect
400
What does algae do?
Algae preforms photosynthesis.
400
True or False: There are two main classes of phytoplankton; dinoflagellates and diatoms.
True: Dinoflagellates use a whip-like tail and are covered with a complex shell and diatoms have a different shell and are more rigid.
400
Give at least one reason as to why fish have gills.
1) It makes them slippery so they can escape from predators 2) It protects their soft internal organs
400
True or False: The Atlantic ocean and the Earths moon have the same volume.
False: The Pacific ocean and the moon have the same volume.
500
What is the deepest part of the ocean called?
The deepest part of the ocean is called Mariana's Trench.
500
Why do more organisms live in the deeper part of the ocean? Example: Seaweed and Fish
Here, the tide can't submerge the organisms, weakening their roots or moving them around.
500
Phytoplankton convert nitrates, phosphates, and sulfur into which of the following: a) Proteins, Nutrients and Oxygen b) Proteins, Fats and Carbohydrates c) Nutrients, Carbohydrates and CO2 (Carbon Dioxide)
b) Phytoplankton convert nitrates, phosphates, and sulfur into proteins, fats and carbohydrates
500
What is echolocation and why do dolphins use it?
Echolocation is emitting calls out to the environment and listening to the echoes of those calls, and dolphins use echolocation because they can't see deep under water where the sun can't penetrate through.
500
What are heterotrophs?
Organisms that eat/decay dead organisms.