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 | micro-waves | L |
|------------|--------|---------|---|-------... show full transcript
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?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is A: J is infrared, K is radio, and L is ultraviolet. This identifies the segments of the electromagnetic spectrum appropriately.
Step 2
All electromagnetic waves can travel in a vacuum. Which of these is the same for all electromagnetic waves travelling in a vacuum?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: speed. All electromagnetic waves travel at the same speed in a vacuum, which is the speed of light, approximately 3imes108 m/s.
Step 3
State one way that x-rays are useful to humans.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
X-rays are useful to humans as they are employed in medical imaging to visualize the internal structures of the body, allowing for the diagnosis of fractures, infections, and tumors.
Step 4
State one way that x-rays are harmful to humans.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
X-rays can be harmful as they can cause cancer by damaging DNA and cells through their ionizing radiation.
