In this lesson we’ll watch and listen to a scientific experiment called the Large Hadron Collider.
Before watching and listening, think about this question:
- Why might scientists build such a large and expensive experiment?
- What do they hope to find out?
Vocabulary
Before listening, check that you understand the meaning of these words:
| Word | Part of speech | Example |
|---|---|---|
| circumference | noun | The island was roughly circular in shape and about 50 km in circumference. |
| collide | verb | When two cars collide at high speed it can be extremely damaging. |
| experiment | noun | We’ll need to run an experiment to find out if the students are learning anything. |
| detect | verb | What’s that smell? Can you detect smoke? |
| particle | noun | Smoke is made of tiny particles suspended in the air. |
| complicated | adjective | The timetable system is too complicated for the students to understand easily. |
| magnet | noun | You need a magnet to pick up those tiny pieces of metal. |
| accelerate | verb | Release the brake and accelerate smoothly away from the traffic lights. |
| observable | adjective | She’s getting better although there’s no observable change. |
| nuclear | adjective | Nuclear power is crucial but dangerous source of energy. |
Watch the video up to 4m 35s. Answer questions on this first section of the video but you can watch the whole thing if you like.