1.
What percentage of earth's water is usable by humans?
Correct Answer
A. 1 %
Explanation
Only 1% of Earth's water is usable by humans. The majority of Earth's water is in the form of saltwater in the oceans, which is not suitable for human consumption or use. The remaining freshwater is mostly locked in ice caps and glaciers, making it inaccessible. Therefore, only a small fraction of Earth's total water supply is available for human use, highlighting the importance of conserving and managing this precious resource.
2.
Over half of the worlds, freshwater is in ice caps or glaciers.
Correct Answer
A. True
Explanation
Over half of the world's freshwater is in ice caps or glaciers because these frozen bodies of water contain a significant amount of the Earth's freshwater resources. Ice caps and glaciers are formed from accumulated snowfall over many years, which eventually compresses into ice. As a result, they hold a substantial volume of freshwater that remains frozen until it melts and enters the global water cycle. This makes the statement "True."
3.
What is the name that earth is often referred to as?
Correct Answer
the blue planet
Explanation
The Earth is often referred to as "the blue planet" because the majority of its surface is covered by water, giving it a blue appearance when seen from space. This nickname highlights the significance of water on Earth and emphasizes the planet's unique characteristic compared to other celestial bodies in our solar system.
4.
All water is distributed equally on Earth.
Correct Answer
B. False
Explanation
The statement that all water is distributed equally on Earth is false. Water distribution on Earth is not equal due to various factors such as climate patterns, geographical features, and human activities. Some regions have abundant water resources, while others face water scarcity. Additionally, water distribution is also influenced by natural phenomena like rainfall and evaporation, which vary across different areas. Therefore, it is incorrect to say that water is distributed equally on Earth.
5.
What percentage of the world's freshwater does Canada have?
Correct Answer
9 %, 9
Explanation
Canada has 9% of the world's freshwater. This means that out of all the freshwater resources available globally, Canada possesses 9% of them. Another way to express this is that for every 100 units of freshwater in the world, Canada has 9 units. Additionally, the numerical value of the percentage is 9.
6.
Where is 87 % of Earth's freshwater found?
Correct Answer
lakes, in lakes, at lakes
Explanation
Freshwater is found in lakes, making them the correct answer. Lakes are bodies of water that are surrounded by land, and they are a significant source of freshwater on Earth. They are formed by various geological processes such as tectonic activity, glacial activity, or volcanic activity. Lakes store water from precipitation, rivers, and groundwater, and they play a crucial role in maintaining the Earth's water cycle. They are important habitats for various plants and animals and are also used for human activities such as drinking water supply, irrigation, and recreation.
7.
What percentage of Earth's freshwater is frozen in glaciers and ice caps?
Correct Answer
C. 77 %
Explanation
77% of Earth's freshwater is frozen in glaciers and ice caps. This means that the majority of Earth's freshwater is not readily available for human use or consumption. It is stored in the form of ice, making it inaccessible for drinking, agriculture, and other essential purposes. This highlights the importance of preserving and protecting these frozen water sources, as they play a crucial role in maintaining the planet's water cycle and supporting various ecosystems.
8.
What are estuaries?
Correct Answer
The area where the river meets the ocean, where the river meets the ocean, were rivers meet the ocean
Explanation
The correct answer is "The area where the river meets the ocean, where the river meets the ocean, were rivers meet the ocean". This answer is correct because it accurately describes estuaries as the locations where rivers and oceans meet. Estuaries are typically characterized by a mixture of fresh and saltwater, and they serve as important habitats for various plant and animal species.
9.
What is salinity?
Correct Answer
A. Refers to the average concentration of salts in a solution.
Explanation
Salinity refers to the average concentration of salts in a solution. It is a measure of the amount of dissolved salts, such as sodium, chloride, and magnesium, in a given volume of water. Salinity is commonly used to describe the saltiness of seawater, with higher salinity indicating a greater concentration of salts. It is an important factor in determining the physical and chemical properties of water bodies, as well as the survival and distribution of aquatic organisms.
10.
The three states of matter are water, food, and gas.
Correct Answer
B. False
Explanation
The statement is incorrect because water, food, and gas are not the three states of matter. The three states of matter are solid, liquid, and gas. Water can exist in all three states, but it is not a state of matter itself. Food is a type of matter, but it can exist in different states depending on its composition (solid, liquid, or gas). Therefore, the correct answer is false.
11.
Adrian's and Jason's blog is named, how to eat pizza.
Correct Answer
B. False
Explanation
The given statement is "Adrian's and Jason's blog is named, how to eat pizza." The correct answer is False. This means that Adrian's and Jason's blog is not named "how to eat pizza."