중2 YBM 송미정 3과 본문 변형문제

____ animation movies, amazing things are possible.

But ____ they actually possible in real life?

In the animation, Rapunzel must lower ____ long hair to let people in her tower.

But could human hair really hold ____ a person?

Surprisingly, yes! A single ____ can hold up 100g and an average head has about 120,000 hairs.

All those hairs could hold ____ a couple of elephants!

With her hair, ____ has the ability to hold up a person.

But she should wrap her ____ around something strong and heavy.

____ she doesn’t, she will get a very sore neck.

In the animation, ____ scare children to get energy from their screams.

____ their city is powered by this sound!

But could we ____ produce electricity to light up a city from sound?

Yes, sound can be changed ____ electricity.

But ____ would not be helpful in our everyday activities because the amount is too small.

For example, the sound from a car horn only ____ 50mv.

____ is only 1/4400 of the average 220v of electricity in our homes.

So, we would need an unbelievable amount of screams to light up an ____ city.

____ house is lifted and flown by thousands of balloons in the animation.

Could that actually ____

Let’s say ____ a house weighs about 50,000kg.

A normal balloon ____ an amusement park can lift about 14g.

So we need about 3,570,000 balloons to lift ____ the house.

We also ____ to think about the weight of the balloons themselves and the strings.

____ we need to add a few more thousand balloons.

Now, the biggest challenge is pumping up ____ those balloons!