How did ancient sailors get fresh water?
they had to distill it
they drank the ocean water
they brought bottled water
they had enough water from the rain
What is reverse osmosis?
using filters to separate water and leave salt behind
using soil to separate water and leave salt behind
boiling water to remove salt
adding water to salt
What is desalination?
removing salt from water
removing fish from water
adding salt to water
drinking salt water
What do cells in the body do when salt levels are too high?
add water
explode
nothing
release water
What is the body's signal that it needs more water to keep working properly?
crying
sleep
thirst
hunger
What can happen if a person becomes too dehydrated?
need to take nap
need to eat more salt
nothing
become weak and possibly die
The Earth's oceans cover nearly how much of the Earth's surface?
4/4
1/4
2/4
3/4
What is a hypertonic fluid?
A fluid that has not enough salt.
A fluid that makes you hyper.
A fluid that has pink salt.
A fluid that has more salt than the body can handle.
What is distilling?
adding soil to salt water
cooling saltwater and leaving salt behind
heating saltwater to create steam and leaving salt behind
adding salt to water
Human bodies are more than _______ water.
5/5
1/5
3/5
2/5
What is the term for not drinking enough water?
starving
dehydrated
full
rehydrated