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C1 Vocabulary & Pronunciation

Space Weather & The Magnetic Field

Master 10 advanced scientific terms, explore space weather impacts on Earth, and practice natural spoken delivery.

How to use this lesson

For Teachers

Guide learners through this 20-minute module by reviewing core terms, monitoring exercise completion, and evaluating speech accuracy.

Check student responses together using the instant automated feedback built into every exercise and recording section.

For Learners

First, study the 10 target words, collocations, and memory tricks in the word table below to build your knowledge.

Next, complete the 16 practice questions from easy to hard, then record your voice in the shadowing tasks at the end.

Word table

10 Core Terms

Theme 1

The Sun

Word	Meaning	Common Collocations	Word Forms	Example Sentence	Memory Tip
sunspot	A cooler, dark patch on the solar surface caused by strong magnetic fields.	active sunspot, sunspot activity, sunspot cycle	–	Scientists observed a massive sunspot forming near the solar equator.	Picture a dark spot right on the bright sun.
plasma	A superheated gas consisting of free electrons and positive ions.	solar plasma, plasma stream, dense plasma	–	Streams of solar plasma rushed across deep space toward Earth.	Picture the glowing gas inside a neon sign.
radiation	Energy sent out from a source as rays or tiny particles, such as heat and light from the Sun.	solar radiation, cosmic radiation, radiation level	radiate (v)	Satellites need heavy metallic shielding against intense solar radiation.	Rays radiate outward like spokes from a wheel.
eruption	A sudden, violent explosion of matter and energy from the Sun.	solar eruption, violent eruption, sudden eruption	erupt (v)	A violent solar eruption sent high-speed particles straight toward Earth.	Picture a space volcano erupting fire into orbit.

Theme 2

The Earth

Word	Meaning	Common Collocations	Word Forms	Example Sentence	Memory Tip
aurora	A natural display of colorful light in the night sky near Earth's poles.	aurora borealis, vivid aurora, green aurora	–	Travelers gathered near the Arctic circle to watch the bright green aurora.	Think of Aurora, the goddess of dawn, glowing.
magnetic	Able to pull iron towards it, like a magnet does.	magnetic field, magnetic storm, magnetic pole	magnet (n)	Earth's magnetic shield redirects harmful cosmic rays away from our atmosphere.	Remember a fridge magnet pulling metal close.
polarity	The condition of possessing two opposite magnetic or electrical poles.	reverse polarity, magnetic polarity, switch polarity	polar (adj)	The Sun flips its magnetic polarity approximately every eleven years.	Connect polarity directly to the North and South Poles.

Theme 3

The Damage

Word	Meaning	Common Collocations	Word Forms	Example Sentence	Memory Tip
surge	A sudden, intense rush or sudden increase of electrical current.	power surge, electrical surge, sudden surge	surge (n, v)	The grid must have been struggling for hours before the lights finally went out during the power surge.	Sounds like a sudden ocean surf crashing.
transformer	An electrical device used to step up or step down voltage levels.	electrical transformer, step-down transformer, backup transformer	transform (v)	High currents damaged an industrial transformer, causing a widespread blackout.	It transforms raw power into safe domestic electricity.
glitch	A minor, temporary malfunction or error in a system or device.	minor glitch, system glitch, technical glitch	–	A minor satellite glitch delayed GPS tracking data for several minutes.	Sounds like a quick hitch or small bump in a gear.

Practice

16 Interactive Exercises

1-4

Collocation Matrix

Choose the noun that goes naturally with each verb.

1. Choose the noun that collocates with the verb "absorb":

____ radiation ____ polarity ____ glitch

2. Choose the noun that collocates with the verb "reverse":

____ radiation ____ polarity ____ eruption

3. Choose the noun that collocates with the verb "cause":

____ polarity ____ glitch ____ transformer

4. Choose the noun that collocates with the verb "overload":

____ sunspot ____ plasma ____ transformer

5-8

Gap-Fill with Word Bank

Word Bank: aurora surge sunspot plasma

5. A giant ____ appeared on the Sun's surface, signaling elevated solar activity.

6. Superheated solar ____ flows outward into interplanetary space during solar wind streams.

7. People in northern latitudes gathered to watch the bright green ____ light up the evening sky.

8. A sudden power ____ damaged sensitive electrical devices across the local grid.

9-12

Choose the Word

Select the single correct word that fits the context of the sentence.

9. Scientists monitored the reversal in the Sun's magnetic ____ during the solar cycle.

____ a. polarity ____ b. sunspot ____ c. glitch

10. A sudden ____ in electricity can burn out a phone charger.

____ a. aurora ____ b. surge ____ c. plasma

11. A tiny software ____ made the screen freeze for a second.

____ a. polarity ____ b. aurora ____ c. glitch

12. A sudden solar ____ sent a huge burst of high-energy particles into space.

____ a. eruption ____ b. aurora ____ c. glitch

13-16

Word-Formation Gap-Fill

Fill in the blank using the exact word form specified in the word table.

13. The Sun began to ____ intense thermal energy across the solar system.

Base word: radiation

14. Earth acts like a massive space ____ with strong north and south poles.

Base word: magnetic

15. Cold ____ winds sweep across the Arctic in winter.

Base word: polarity

16. Modern substations help ____ high voltages into safe domestic power.

Base word: transformer

Shadowing

Listen & Record

Listen to the model pronunciation, then click the recording box to speak clearly into your microphone.

Part 1: Key Collocations

Item 1 • Collocation 🔊 Listen

solar radiation

[Bài tập luyện nói]

____

Item 2 • Collocation 🔊 Listen

magnetic field

[Bài tập luyện nói]

____

Item 3 • Collocation 🔊 Listen

power surge

[Bài tập luyện nói]

____

Item 4 • Collocation 🔊 Listen

electrical transformer

[Bài tập luyện nói]

____

Part 2: Practical Sentences

Item 5 • Sentence 🔊 Listen

A strong power surge damaged the local power grid.

[Bài tập luyện nói]

____

Item 6 • Sentence 🔊 Listen

Scientists monitor sunspots to predict space storms.

[Bài tập luyện nói]

____

Item 7 • Sentence 🔊 Listen

Superheated plasma flows away from the sun.

[Bài tập luyện nói]

____

Item 8 • Sentence 🔊 Listen

A sudden eruption can trigger a minor system glitch.

[Bài tập luyện nói]

____

Part 3: Extended Speech

Item 9 • Extended Sentence 🔊 Listen

Earth's magnetic field protects our atmosphere from solar wind.

[Bài tập luyện nói]

____

Item 10 • Extended Sentence 🔊 Listen

The Sun changes its magnetic polarity about every eleven years.

[Bài tập luyện nói]

____

Part 4: Challenge Words

Item 11 • Target Word 🔊 Listen

aurora

[Bài tập luyện nói]

____

Item 12 • Target Word 🔊 Listen

radiation

[Bài tập luyện nói]

____

Vocabulary: Space Weather and Magnetic Fields

Space Weather & The Magnetic Field

How to use this lesson

For Teachers

For Learners

Word table

The Sun

The Earth

The Damage

Practice

Collocation Matrix

Gap-Fill with Word Bank

Choose the Word

Word-Formation Gap-Fill

Shadowing

Part 1: Key Collocations

Part 2: Practical Sentences

Part 3: Extended Speech

Part 4: Challenge Words

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