Spontaneous emission

Spontaneous emission

Assessment

Interactive Video

Science, Physics

6th - 12th Grade

Hard

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The transcript explains the process of spontaneous emission, where a photon of light is produced when an atom transitions from an excited state to a lower energy level. It highlights examples of spontaneous emission, such as light from fluorescent tubes, cathode ray tube televisions and monitors, and the Aurora borealis.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens during spontaneous emission?

An atom splits into two smaller atoms.

An atom remains in the same energy state without releasing a photon.

An atom absorbs a photon and moves to a higher energy state.

An atom releases a photon and transitions to a lower energy state.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a source of light due to spontaneous emission?

LED lights

Solar panels

Fluorescent tubes

Incandescent bulbs

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of television technology relies on spontaneous emission?

OLED TVs

Plasma TVs

LCD TVs

Cathode ray tube TVs

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which natural phenomenon is an example of spontaneous emission?

Volcanic eruptions

Thunderstorms

Aurora borealis

Rainbows

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary cause of light in the Aurora borealis?

Spontaneous emission

Refraction of light

Reflection of sunlight

Absorption of cosmic rays