lab 1

Question 1

Radiation

Answer 1

coming into existence

Question 2

what is the lower limit for human eye to see?

Answer 2

0.1mm

Question 3

any objects closer to the human eye than 0.1mm are seen as?

Answer 3

1 object

Question 4

what is the microscope magnification?

Answer 4

the ability of a microscope to produce an image of an object at a scale larger (or even smaller) than its actual size

Question 5

what is microscope resolution

Answer 5

the ability of a microscope to separate close objects

Question 6

how many eons is the geologic record divided into?

Answer 6

3

Question 7

what are the three geologic eons?

Answer 7

1. archaean eon 2. proterozoic eon 3. phanerozoic eon

Question 8

How many eras is the Phanerozoic eon divided into?

Answer 8

3

Question 9

what are the three phanerozoic eras?

Answer 9

1. paleozoic era 2. mesozoic era 3. cenozoic era

Question 10

what does the phanerozoic eon encompass?

Answer 10

multicellular eukaryotic life

Question 11

What is the Cambrian Explosion?

Answer 11

the sudden appearance of fossils resembling modern animal phyla in the cambrian period (535-525 million years ago)

Question 12

what animal phyla appeared before the cambrian explosian?

Answer 12

-sponges, cnidarians, molluscs

Question 13

what did the cambrian explosion provide the first evidence of?

Answer 13

provides the first evidence of predator-prey interactions

Question 14

what is the scientific name for sponges?

Answer 14

porifera

Question 15

what is the scientific name for cnidarians?

Answer 15

cnidaria

Question 16

what is the scientific name for molluscs?

Answer 16

mollusca

Question 17

what is the microscope?

Answer 17

an instrument used to examine objects too small for the unaided eye