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7.2 The Universe and red-shift

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Question 25

Cosmic Microwave Background (CMB) radiation provides evidence that the Universe has evolved from a hot, dense beginning.

Table 1

Type of radiation	Typical wavelength
Gamma rays	2.0 × 10^-13 m
X-rays	5.0 × 10^-11 m
Ultraviolet	$\text{ nm}$
Visible	$\text{ nm}$
Infrared	$\ \mu\text{m}$
Microwaves	2.5 mm
Radio waves	80 m

Use the data in Table 1 to give a typical value for the wavelength of CMB radiation.

[2]

Markscheme

7.2 The Universe and red-shift Questions

GCSE
Physics
7.2 The Universe and red-shift

53 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift. Each one has a worked solution and a mark scheme showing where the marks go.

7.2 The Universe and red-shift

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7.2 The Universe and red-shift

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Question 25

Cosmic Microwave Background (CMB) radiation provides evidence that the Universe has evolved from a hot, dense beginning.

Table 1

Type of radiation	Typical wavelength
Gamma rays	2.0 × 10^-13 m
X-rays	5.0 × 10^-11 m
Ultraviolet	$\text{ nm}$
Visible	$\text{ nm}$
Infrared	$\ \mu\text{m}$
Microwaves	2.5 mm
Radio waves	80 m

Use the data in Table 1 to give a typical value for the wavelength of CMB radiation.

[2]

Markscheme

7.2 The Universe and red-shift Questions

GCSE
Physics
7.2 The Universe and red-shift

53 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift. Each one has a worked solution and a mark scheme showing where the marks go.