Space
Microscope
Density
100
114 billion years
How long does it take to form a galaxy?
100
A microscope that could magnify 10 times.
What did Zacharias and Hans Janssen invent?
100
Mass divided by volume
What is the formula for density?
200
Spiral, elliptical, and irregular
What are the types of galaxies?
200
A microscope that could magnify 500 times.
What did Anthony van Leeuwenhoek invent?
200
Identify matter, classify matter, and compare one kind of matter to another
What is density used for?
300
Main sequence, giants, red giants, and white dwarfs
What are the kinds of stars
300
A microscope with a refined lense.
What did Carl Zeiss invent?
300
The amount of matter in a given space or volume.
What is density?
400
Planet size-4,879 kilometers
What is Mercury
400
The first sketches of organisms under a microscope.
What did Robert Hooke invent?
500
Assigned to a group of Yerkes classification scheme by width of their spectral lines.
How are stars classified.
500
Bacteria
What did Matthias Schleiden discover?
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