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WorksheetsAll About Stars
Total questions: 12
Worksheet time: 7mins
Stars are born when large clouds of gas...
are hit by a pulsar.
are released by a black hole.
collapse due to self-gravity.
heat up by friction.
Our Sun gets its energy from...
fusing hydrogen atoms into helium atoms.
convection zones in its core.
coronal mass ejections.
nuclear fission.
Coronal mass ejections cause what phenomena on Earth?
High and low tides.
The magnetic poles to change directions.
Strange behavior in birds and cattle.
The Northern and Southern Lights.
Compared to other stars, our Sun is...
A pretty average star.
A very young, very hot star.
A small but hot star.
Larger than most stars but average in temperature.
When a star runs out of hydrogen fuel and starts fusing helium...
it collapses into a black hole.
it expands to become a red giant or supergiant star.
it gets too cold to be seen any longer.
it becomes a main sequence star.
When a star up to 8 times the size of our Sun dies, it becomes a...
Neutron star.
Pulsar.
White dwarf.
Black hole.
Stars that are 10 times the size of our Sun or bigger become this when they die:
Neutron star.
Pulsar.
White dwarf.
Black hole.
Stars spend most of their lives on this part of a Hertzsprung-Russell Diagram:
The Luminosity Scale
The Spectral Type Sequence
The Brightness Scale
The Main Sequence
What does an H-R Diagram tell us about luminosity and temperature?
Dim stars are usually very bright.
There are some very hot stars too dim to see.
Hot stars are always bright stars.
The brightest stars are average temperature.
On an H-R Diagram, stars with very long lives can be found...
where there are hot, blue stars.
where there are cold, red stars.
in the middle with warm, yellow stars.
all over the diagram and not in any particular place.
Where on an H-R Diagram do the Red Giant stars appear?
Above and right of the Main Sequence.
Above and left of the Main Sequence.
Below and left of the Main Sequence.
In the exact center of the diagram.
Reading an H-R Diagram from left to right you will find...
Small stars to big stars.
Dim stars to bright stars.
Hot stars to cool stars.
Low luminosity stars to high luminosity stars.
