Intro to Microscopes

Find the total magnification: 
Eyepiece = 10X 
Objective lens = 55X  

• 10x

• 55x

• 65x

• 550x

Find total magnification for:
Eyepiece = 20X 
Objective lens = 20X  

• 20x

• 40x

• 200x

• 400x

Find the total magnification:
Eyepiece = 15X 
Objective lens = 100X  

• 15x

• 100x

• 115x

• 1500x

You should avoid letting the objective lenses touch your glass slide.

• True

• False

What is number 17?

• body tube

• arm/neck

• stage

• base

Which picture below shows the safe way to hold a microscope when you are carrying it across the classroom?

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• 
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Using microscopes he constructed in the 1600s, Antonie van Leeuwenhoek discovered a new microscopic world. His discoveries paved the way for the development of the microscopes used today and for many important biological breakthroughs. Which statement best describes van Leeuwenhoek’s work?

• His observations alone provided enough information to form modern biological theories.

• The microscopes he made were used by all scientists and have remained unchanged over the years.

• Knowledge gained by his work has led to the improvement and development of modern scientific concepts.

• Explanations of the microscopic world today are solely based on his observations and conclusions.

What did Anton van Leeuwenhoek discover when he used microscopes to observe drops of water?

• microorganisms

• macroorganisms

• rocks

• empty chambers

What did van Leeuwenhoek call his new discovery at first?

• little beasties

• beastie boys

• cells

• tiny little guys

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the total magnification if the eyepiece is 10X and the objective lens is 40X?

• 10x

• 40x

• 400x

• 50x