중2 YBM 송미정 3과 본문 변형문제

In animation movies, amazing ____ are possible.

But are they actually ____ in real life?

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

But could human hair really hold up a ____?

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

All those hairs could ____ up a couple of elephants!

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

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

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

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

____, their city is powered by this sound!

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

Yes, sound can be changed ____ electricity.

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

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

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

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

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

Could that actually ____?

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

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

So we need about ____ balloons to lift up the house.

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

Then, we need to add a few more thousand ____.

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