Visible light and microwaves are both electromagnetic waves. (a) (i) Complete the sentence by putting a cross (✔) in the box next to your answer. Electromagnetic waves ☐ A all have the same wavelength in a vacuum ☐ B all have the same wavelength in glass ☑ C all travel at the same speed in a vacuum ☐ D all travel at the same speed in glass (ii) Visible light can be split into colours. The diagram shows the colours arranged in order of frequency. Complete the diagram by writing in the four missing colours. ☐ ☐ yellow ☐ blue ☐ indigo ☐ low frequency high frequency (iii) Microwaves have many uses. State two uses for microwaves.

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Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1

Question 5

Visible light and microwaves are both electromagnetic waves. (a) (i) Complete the sentence by putting a cross (✔) in the box next to your answer. Electromagnetic w... show full transcript

Worked Solution & Example Answer:Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1

Step 1

Complete the sentence by putting a cross (✔) in the box next to your answer.

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Answer

Electromagnetic waves C all travel at the same speed in a vacuum. This is the only correct statement as the speed of electromagnetic waves is constant in a vacuum, regardless of their wavelength or frequency.

Step 2

Complete the diagram by writing in the four missing colours.

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Answer

The missing colours in order of frequency from low to high are: red, orange, green, and violet.

Step 3

State two uses for microwaves.

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Answer

Cooking food - Microwaves are commonly used in microwave ovens to heat and cook various types of food.
Mobile phones - Microwaves facilitate communication in mobile phone technology.

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Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1

Worked Solution & Example Answer:Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1

Complete the sentence by putting a cross (✔) in the box next to your answer.

Complete the diagram by writing in the four missing colours.

State two uses for microwaves.

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