Future Space Power
This is a huge challenge for modern rockets because it is too heavy and it runs out very quickly. What is it?
Rocket fuel
On sunny days, smart cities capture extra energy from nature and save it inside "these items" to use later. What are they?
Giant batteries
What two things did people rely on to see at night for thousands of years before electric lights?
Candles and oil lamps
A 15-year-old student in the Philippines invented a device that converts what human action into electricity?
Footsteps (Walking)
과학자들이 이 과제(문제)를 살펴보았을 때, 그들은 우주 여행을 영원히 바꿀 수 있는 우주선 동력 공급의 놀라운 새로운 방법들을 개발하기 시작했습니다.
The International Space Station uses these giant devices—as long as a football field—to change sunlight into electricity. What are they?
Solar panels
This smart computer program observes how much energy a city needs and automatically dims streetlights late at night. What is it?
Artificial Intelligence (AI)
Who invented a functional electric light bulb in the 1800s that could last long enough to be useful?
Thomas Edison
A teenager in India designed a solar-powered purifier to help villages get what clean resource?
Water (Clean drinking water)
게다가, 그 도시는 심지어 환경미화원들에게 쓰레기통이 언제 가득 차는지를 알려주는 스마트 쓰레기통을 가지고 있으며, 이는 쓰레기 수거에 드는 시간과 에너지를 아껴줍니다.
This type of energy uses atomic reactions. It works even during dark winters or massive dust storms on Mars. What is it?
Nuclear power / Nuclear energy
This island nation is a global leader that uses an advanced traffic system and smart trash cans that text workers when they are full. What city is it?
Singapore
Which modern bulbs last for many years and help reduce our power bills by using less electricity?
LED bulbs
What is the special name for an early working model that inventors build to test their ideas?
A prototype
Looking back, it's amazing to see how lighting has improved from basic candles to advanced LED bulbs.
돌이켜보면, 조명 기술이 기본적인 양초에서 진보된(발전된) LED 전구로 어떻게 발전해 왔는지 보는 것은 놀랍습니다.
When hydrogen mixes with oxygen inside special fuel cells, it generates clean power and "this item" that astronauts can drink on long journeys. What is it?
Pure water / Fresh water
What happens to streetlights late at night when there are fewer cars on the road?
They become dimmer.
Why did people have to be very cautious when using candles in wooden houses long ago?
Because the open flames could easily start fires.
How many different designs did the student in the Philippines try before finding one that worked well?
Five different designs
A 15 year old student in the Philippines invented a device that converts footsteps into electricity.
필리핀의 한 15세 학생은 발걸음(걷는 것)을 전기로 바꾸는 장치를 발명했습니다.
Why is solar power weaker on Mars than it is on Earth?
Because Mars is farther from the Sun than Earth.
How does a smart city's AI prevent energy waste inside buildings?
It controls heating and cooling based on how many people are inside.
Early candles were crafted from animal fat or beeswax. What did early oil lamps burn for light?
Olive oil or whale oil
According to the lesson, what two items can you use to design a solar oven at home to cook food?
A pizza box and aluminum foil
For instance, the student who made the footstep power device tried five different designs before finding one that worked well.
예를 들어, 이 발걸음 동력 장치를 만든 학생은 잘 작동하는 것을 찾아내기 전에 다섯 가지의 서로 다른 디자인(도안)을 시도했습니다.