Listen to part of a talk about how a compass works. – Luyện nghe VSTEP Part 3 – Bài nói, bài giảng

1. Why does a compass needle point north?

A. It follows satellite signals.B. It lines up with the Earth's magnetic field.C. It is heavier at one end.D. It is pulled by the sun.

2. What creates the Earth's magnetic field?

A. moving liquid metal deep inside the EarthB. the North PoleC. the oceansD. rocks on the surface

3. Why must people using a compass with a map make a correction?

A. The North Pole moves every day.B. Compass needles become weaker over time.C. Maps are often printed wrongly.D. The compass points to the magnetic north pole, not the North Pole.

4. What can make a compass give a wrong reading?

A. being held too highB. cold weatherC. being near iron or steelD. being used at night

5. Why do mountain rescue teams advise walkers to carry a compass?

A. It is more accurate than a phone.B. It is required by law.C. It is lighter than a map.D. It doesn't need a battery or a signal.