10 Questions
What is the primary purpose of metal detectors?
To find metal
What happens when metal detectors' waves hit metal?
The device beeps
What is a common use of metal detectors at the beach?
To find phones in the sand
Why do metal detectors help protect people?
They help keep guns out of certain places
What was the original purpose of metal detectors?
To help miners
What is a benefit of modern metal detectors?
They are light and cheap
What do special wands help guards do?
Look for metal on a person
What is another way metal detectors save lives?
They remove bombs from the ground
Why do factories scan clothes for metal?
To make clothes safer
What is a common outcome of using metal detectors at the beach?
They usually find junk
Study Notes
Metal Detectors
- Metal detectors use magnetic waves to find metal, which change when they hit metal, causing the device to beep.
- The first metal detectors were large, expensive, and didn't work well, but people continued to improve them.
- Modern metal detectors are smaller, lighter, and cheaper, making them more accessible for use in various situations.
Uses of Metal Detectors
- At the beach, metal detectors are used to find lost items like rings and phones in the water and sand.
- In airports, courthouses, and some schools, metal detectors are used to protect people by detecting weapons and keeping guns out of these areas.
- Guards use special wands to detect metal on a person.
Additional Applications
- During wars, metal detectors help find and remove buried bombs, making areas safer for locals.
- In the clothing industry, metal detectors scan clothes for needles that may have broken off during manufacturing, preventing injuries to people trying on clothes.
Importance of Metal Detectors
- Metal detectors save lives by detecting and removing bombs and other harmful objects.
- They also contribute to making the world a safer place by protecting people in various settings.
Test your reading skills with this passage about metal detectors and how they work. Answer questions about the text to check your understanding.
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