Microscopy

Question 1

Define an object

Answer 1

The real object or sample that you’re looking at

Question 2

What is an image

Answer 2

It is what you look at when you look in the microscope

Question 3

What is magnification

Answer 3

How many times larger the image is then the object

Question 4

What is the equation for magnification

Answer 4

Magnification= image size/object size

Question 5

Resolution

Answer 5

A measure of how detailed the image is

Question 6

How does a microscope work?

Answer 6

Light from the room hits the mirror and reflects upwards through the object then it passes through the objective lens to the eye piece then to the eye

Question 7

What is the positives and negatives about the light microscope

Answer 7

Positives
They are easy to use
They are relatively cheap
Small

Negatives
They require light
They have a resolution of 0.2 micrometers (not good to study the sub-cellular structures)

Question 8

What are the positives and negatives of electron microscopes

Answer 8

Positives
You can see sub-cellular structures
The resolution is 0.1 nanometres
(2000 X better than light microscope)

Negatives
They are quite big
They are expensive

Question 9

Order these smallest to largest
Micrometer,Nanometre,Kilometre, Millimetre, Metre

Answer 9

Nanometre
Micrometer (μ)
Millimetre
Metre
Kilometre

Question 10

How big are atoms

Answer 10

0.1-0.5 nanometres

Question 11

Size of viruses and bacteria

Answer 11

They are in micrometers

Question 12

What’s the smallest thing a human can see

Answer 12

Width of a human hair

Question 13

One centimetres to millimetre

Answer 13

10mm