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.
Exercise
Please open the exercise to continue.