WorksheetsPS Test 1 (8th) 21-22
Total questions: 13
Worksheet time: 8mins
Light is a form of radiation
True
False
What is A in the graph?
Amplitude
Frequency
Wavelength
What is B in the graph?
Wavelength
Amplitude
Frequency
Based on the picture, what is violet's wavelength?
400 nm
550 nm
700 nm
What are the waves humans cannot see?
Visible Light
Infrared Light
None of the above
Visible light is formed by
7 "colors"
a spectrum of colors between violet and red
none of the above
Explain the electromagnetic spectrum
What is a star?
A huge sphere of glowing gas, made up mostly by hydrogen
A small sphere of liquid, made up mostly by hydrogen
A huge sphere of glowing gas, made up mostly by oxygen
How do stars produce light?
By reflecting light from other sources
By burning the hydrogen that is inside them
None of the above
Stars can be classified by
Polar and Non-Polar
Color/Temperature, Size and Chemical Composition
Color/Temperature, Size and Constellation
The color of a star is related to its temperature
the hotter the temperature, the more red the star becomes
the hotter the temperature, the more blue the star becomes
none of the above
What is the average chemical composition of stars?
73% hydrogen, 25% helium, 2% others
73% helium, 25% hydrogen, 2% others
73% others, 25% hydrogen, 2% helium
What is the classification of the brightness of a star?
Apparent, Absolute
Existing, Non-existing
none of the above
