Everyday Science: Water Quiz

Everyday Science: Water Quiz
Image: Mark Lewis/Getty Images

About This Quiz

Water is quite arguably the most important substance on Earth. Its unique properties make it an incredibly versitile tool. Aside from fueling life, it's useful in cleaning, cooking and transportation, just to name a few things.
In a water molecule, how is the charge distributed?
negatively on the hydrogen side and positively on the oxygen side
positively on the hydrogen side and negatively on the oxygen side
Water is a V-shaped polar molecule that is charged positively near the hydrogen atoms and negatively near the oxygen atom.
Neither of the above; water is nonpolar and has an evenly distributed charge.

Advertisement

What percentage of the Earth's water supply is freshwater?
3 percent
Only 3 percent of the world's water supply is freshwater, and 77 percent of that is frozen. According to National Geographic, of the 23 percent that is not frozen, only a half a percent is available to supply every plant, animal and person on Earth with all the water they need to survive.
15 percent
30 percent

Advertisement

Most of the Earth's freshwater is in:
lakes
man-made reservoirs
aquifers
Most of the world's freshwater is contained in underground aquifers, which house about 2.4 million cubic miles (10 million cubic kilometers) of it. By comparison, lakes contain only 21,830 cubic miles (91,000 cubic km), and man-made reservoirs contain merely 1,200 cubic miles (5,000 cubic km).

Advertisement

What percentage of the world's population doesn't have access to clean water?
2 percent
17 percent
According to the World Health Organization, about 17 percent of the world's population doesn't have access to clean water -- that's nearly one billion people.
38 percent

Advertisement

Oil is an example of a substance that is:
hydrophillic
hydrophobic
Oil doesn't dissolve in water, which means it is hydrophobic. Hydrophillic refers to substances that do dissolve in water.
hydroponic

Advertisement

What property of water allows it to stick to itself?
coagulation
adhesion
cohesion
Cohesion is the property that allows water to stick to itself very easily. Adhesion means that water also sticks very well to other things.

Advertisement

In which step of the water cycle does liquid water transform into gas?
Evaporation
During evaporation, water transforms into gas. When the sun heats the surface of water, it evaporates and ends up in the atmosphere as water vapor. Condensation occurs when water changes back from gas to liquid droplets, and precipitation refers to when water falls to Earth in the form of rain or snow.
Condensation
Precipitation

Advertisement

Our bodies consist of what percent water?
20 percent
40 percent
60 percent
According to the Mayo Clinic, our bodies are about 60 percent water. Water helps our bodies perform various vital functions, including transporting nutrients and regulating body temperature.

Advertisement

What property of water makes it bead up on waxy surfaces?
capillary action
universal solvency
surface tension
Surface tension is why water beads up on waxy surfaces, such as leaves or waxed cars. Surface tension makes these water drops round so they cover the smallest possible surface area.

Advertisement

What is the name of the first step in the water-purifying process during which particles clump together?
sedimentation
coagulation
In coagulation, coagulants like lime and alum are added to the water, which causes particulates to clump together. Sedimentation and aeration come later in the process.
aeration

Advertisement

You Got:
/10
Mark Lewis/Getty Images
Friends Quiz: Can You Remember These Obscure Details From Friends?
Friends Quiz: Can You Remember These Obscure Details From Friends?
If you consider yourself to be a huge "Friends" fan, then this is the quiz for you! Test your knowledge of the show by seeing if you can remember all these obscure little details from the series!
Explore More

Featured