Understanding Star Classification: Color and Surface Temperature

Understanding Star Classification: Color and Surface Temperature

Assessment

Interactive Video

Physics, Science

10th Grade - University

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial explains how stars are classified based on their color and temperature. It introduces the concept of luminosity, comparing the energy output of different stars like red dwarfs, the sun, and Wolf-Rayet stars. The classification table is discussed, showing how stars are grouped by color and surface temperature. The video also explores the relationship between a star's intensity, wavelength, and temperature, illustrating how peak wavelengths shift with temperature changes. The tutorial concludes by summarizing the connection between a star's color, temperature, and luminosity.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the luminosity of the Sun compared to the red dwarf star mentioned in the video?

8000 times more

Equal

Twice as much

8000 times less

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which class does the Sun belong to based on its surface temperature?

Class B

Class O

Class G

Class M

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the color of a star indicate about its characteristics?

Its age

Its distance from Earth

Its size

Its surface temperature

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the peak wavelength of a star's light change as its temperature increases?

It shifts to longer wavelengths

It remains the same

It shifts to shorter wavelengths

It disappears

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the peak wavelength of a star with a temperature of 7000 Kelvin?

Just below 600 nanometers

Just above 700 nanometers

Just above 400 nanometers

Exactly 500 nanometers

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does a blue star have the greatest luminosity?

It is the oldest star

It is closest to Earth

It has the highest temperature

It is the largest star

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the energy emitted per unit area per second as a star's temperature increases?

It fluctuates randomly

It increases

It remains constant

It decreases