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Spectra: Emission and Absorption Concepts

Spectra: Emission and Absorption Concepts

Assessment

Interactive Video

Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains different types of spectra, including continuous, emission, absorption, line, and band spectra. Continuous spectrum results from the dispersion of white light, producing a seamless range of colors. Emission and absorption spectra are related to the behavior of gases or vapors, with emission spectra showing bright lines on a dark background and absorption spectra showing dark lines on a bright background. Line spectra are characteristic of atoms, while band spectra are associated with molecules, such as the H2 molecule, and involve closely spaced lines due to atomic vibrations and rotations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main characteristic of a continuous spectrum?

It has gaps between colors.

It consists of bright lines on a dark background.

It is only produced by gases.

It shows a seamless spread of colors.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following sources can produce a continuous spectrum?

An incandescent filament lamp

A fluorescent light

A gas at low temperature

A laser

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between emission and absorption spectra?

Absorption spectra are only produced by solids.

Emission spectra have bright lines on a dark background.

Absorption spectra have bright lines on a dark background.

Emission spectra have dark lines on a bright background.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes the bright lines in an emission spectrum?

Absorption of energy by electrons

Emission of energy by electrons

Vibration of molecules

Rotation of atoms

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a line spectrum also known as?

Molecular spectrum

Band spectrum

Continuous spectrum

Atomic spectrum

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element is commonly associated with a line spectrum?

Hydrogen

Oxygen

Nitrogen

Carbon

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes the distinct lines in a line spectrum?

Absorption of light by gases

Excitation and de-excitation of electrons

Rotation of atoms

Vibration of molecules

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