1 (a) Figure 1 shows the parts of the electromagnetic spectrum - Edexcel - GCSE Physics Combined Science - Question 1 - 2021 - Paper 1
Question 1
1 (a) Figure 1 shows the parts of the electromagnetic spectrum.
gamma rays x-rays visible K microwaves L
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Worked Solution & Example Answer:1 (a) Figure 1 shows the parts of the electromagnetic spectrum - Edexcel - GCSE Physics Combined Science - Question 1 - 2021 - Paper 1
Step 1
Which row of the table names the parts J, K and L of the electromagnetic spectrum?
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Answer
The correct answer is A: J is infrared, K is radio, and L is ultraviolet. This can be verified by recalling the arrangement of the electromagnetic spectrum and identifying the corresponding parts.
Step 2
All electromagnetic waves can travel in a vacuum. Which of these is the same for all electromagnetic waves travelling in a vacuum?
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Answer
The correct answer is C: speed. All electromagnetic waves travel at the same speed in a vacuum, which is approximately 3imes108 m/s.
Step 3
State one way that x-rays are useful to humans.
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Answer
X-rays are particularly useful for medical imaging. They allow doctors to see inside the body to diagnose problems such as fractures, tumors, or infections.
Step 4
State one way that x-rays are harmful to humans.
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Answer
X-rays can be harmful as they have the potential to damage cells, which may lead to mutating DNA and increasing the risk of cancer.
