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Which sentence uses the word "balance" correctly?
AThe balance is very heavy to carry.
BShe ate a balance for breakfast.
CI need to balance my time between study and play.
Balance means having the right amount of different things, like time for study and play.
Which sentence uses the word "accidentally" correctly?
AI accidentally dropped my ice cream on the floor.
BHe accidentally his homework very well.
CThe accidentally dog barked loudly.
Accidentally means doing something without meaning to, like dropping your ice cream.
What do people run low on during a drought?
APopcorn for movie night.
BSalty ocean water.
CFresh water to drink.
The video says that in a drought, people start running low on fresh water to drink.
What is the main problem with drinking ocean water?
AIt has a lot of salt in it.
BIt is too cold.
CIt has too many fish.
The video explains that ocean water has a lot of salt, making it unsafe to drink.
Which body parts help keep the right balance of salt and water?
AYour two eyes.
BYour two kidneys.
CYour two lungs.
The video says your two kidneys are the most important body parts for this job.
Why aren't there many water treatment plants?
AThey are too small.
BThey take a lot of time and money.
CThey make the water too salty.
The video says these plants take a lot of time and money to build and run.
Why do you feel thirsty after eating a big bucket of salty popcorn?
AYour body wants to make more salt.
BYour body is tired from eating.
CYour body needs water to get rid of the salt.
Your body tells you to drink water so it can make urine and remove the extra salt.
What would happen if you drank a lot of ocean water?
AYou would not feel thirsty anymore.
BYou would have too much salt in your body.
CYour kidneys would get rid of all the salt easily.
There is a limit to how much salt your kidneys can handle, so the extra salt would stay in your body.
Why is the salt on popcorn not a problem, but the salt in the ocean is?
APopcorn salt is good for your kidneys.
BOcean water has way more salt than popcorn.
CPopcorn salt is a different kind of salt.
The video says ocean water is super salty and has way more salt than our popcorn does.
Why are scientists trying to find better ways to get salt out of ocean water?
ABecause people don't like fresh water.
BBecause the current ways cost too much money.
CBecause the ocean is running out of water.
Scientists want to find ways that don't cost as much money so we can use more ocean water.
You are at the beach and you feel very thirsty. What should you do?
ADrink some water from the ocean.
BDrink fresh water from your water bottle.
CEat some salty snacks.
You should always drink fresh water because ocean water has too much salt and will make you more thirsty.
How can you help make sure there is enough fresh water for everyone?
ALeave the faucet running when you brush your teeth.
BThrow your trash in the lake.
CTurn off the water when you are not using it.
Turning off the water helps save it so that we don't waste the fresh water people need to drink.
Nguồn: Kênh SciShow Kids