WorksheetsBrainpop! Dark Matter
Total questions: 10
Worksheet time: 5mins
Dark matter is a theoretical substance. What does this mean?
Scientists have simply guessed that it exists
There is evidence for its existence, but it hasn't been proven
Scientists are certain that it exists
Scientists are split 50/50 over whether it exists or not
An object's gravity depends on its:
mass
density
volume
weight
What caused Fritz Zwicky to come up with the theory of dark matter?
He saw a galaxy cluster moving away from earth at a rapid rate of speed
He saw a galaxy cluster moving toward earth at a rapid rate of speed
He saw a galaxy cluster breaking apart at a rapid rate of speed
He saw a galaxy cluster revolving at a rapid rate of speed
If you increase the mass of a star, what will the planets orbiting it do?
They will speed up
They will slow down
They will move toward the star
They will move away from the star
How can we detect dark matter?
With telescopes
With a radio waves
Indirectly, through its effects
With electromagnetic radiation
What question is behind the missing mass problem?
Why galaxies seem to be more massive than observable data suggests
Why galaxies seem to be less massive than observable data suggests
Why certain stars appear more massive than observable data suggests
Why certain stars appear less massive than observable data suggests
Why does gravitational lensing occur?
Light speeds up when it encounters massive objects
Light slows down when it encounters massive objects
The gravity of massive objects bends light
Extremely bright or extremely dark objects cause optical illusions
How would dark matter be different from the stars and planets we can see?
It wouldn't reflect light
It wouldn't emit radiation
It wouldn't interact with the electromagnetic spectrum
All of these
What is a neutrino?
A type of very small particle
A type of black hole
A type of neutron star
A very dense type of galaxy
Which of the following is true of black holes?
They are composed of neutrinos
They are extremely dense
Only light can escape their gravity
Scientists agree that they are sources of dark matter
