B2 بالاتر از متوسط English 4:26 655 لغت Educational

The solution to our energy problems is … a toaster - Rachel Yang

TED-Ed · 262,420 بازدید · Added 3 ساعت پیش

Learning Stats

B2

سطح CEFR

655

Total Words

330

Unique Words

6/10

سختی

Vocabulary Diversity 50%

زیرنویس‌ها (75 segments)

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00:07

In 1919, American mechanic Charles Strite

00:10

invented something humanity had desired for millennia:

00:13

the automatic toaster.

00:15

Various cultures had long toasted their bread over fire

00:18

in a process that required constant attention and produced uneven results.

00:22

But in 1905, toast technology evolved with the invention

00:26

of a new nickel and chromium composite.

00:28

When an electric current ran through these filaments,

Full subtitles available in the video player

Key Vocabulary (21)

air A1 noun

The invisible mixture of gases that surrounds the Earth and which humans and animals breathe. It also refers to the open space above the ground or the general atmosphere of a place.

industrial A2 noun

An industrial is a company involved in the manufacturing of goods, such as machinery, equipment, or supplies. In finance, it specifically refers to a share or stock in such a manufacturing company.

high A1 adjective

tall

"High mountain."

technology B2 adjective

The practical application of scientific knowledge to solve problems or invent useful tools and systems. It encompasses everything from simple hand tools to complex computers and machinery used in modern industry.

bread B2 adjective

A primary food staple made from flour or meal that is moistened, kneaded, and baked. In a broader sociopolitical or academic context, it often symbolizes basic sustenance, livelihood, or the fundamental requirements for human survival.

store A1 noun

A place where goods are sold to customers, typically a building or a dedicated area within one. It can range from small local shops to large department buildings selling many types of products.

"There's a new clothing store opening next week."

battery A1 noun

A device that stores chemical energy and converts it into electrical power to run electronic devices. It is commonly found in objects like mobile phones, remote controls, and cars.

"The battery is important."

toaster A1 noun

A toaster is a small electrical kitchen appliance designed to brown slices of bread by exposing them to radiant heat. It typically has slots where bread is inserted and pops up automatically when the toasting process is finished.

"The toaster is important."

heating A1 noun

The system or equipment used to keep a building or house warm, especially during cold weather. It also refers to the process of making something hot or increasing its temperature.

"The heating is important."

heat A1 noun

Heat refers to the quality of being hot or having a high temperature. It is commonly used to describe the warmth from the sun or the atmosphere during summertime.

"The heat is important."

fossil A1 noun

A fossil is the remains or trace of a plant or animal that lived a very long time ago, preserved in rock. It helps scientists understand how life on Earth has changed over millions of years.

energy A1 noun

Energy is the power that comes from things like electricity, coal, or the sun to make machines work or provide heat. It also describes the physical and mental strength that people have to be active and do things.

temperatures
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