8th Grade Midterm

Question 0

What is a conversion factor?

Answer 0

An equation that shows how 2 units of measurement are related.

Question 1

What is the standard measurement system used by scientists around the world?

Answer 1

The International System of Units (SI)

Question 2

What would happen if 2 scientists shared data in different systems of measurement?

Answer 2

It would start confusion.

Question 3

How do you find the density of water?

Answer 3

You weigh a graduated cylinder with and without cylinder.
Subtract the weight of the cylinder without the water from the weight of the cylinder with the water.
Measure the volume by looking at the bottom of the meniscus in the graduated cylinder.
Divide the volume from mass.

Question 4

What is the conversion factor to convert between kilometers and meters.

Answer 4

1,000 m = 1 km

Question 5

What is the density of water?

Answer 5

1 gram per mL.

Question 6

Which would float/sink in a tub of water?

Block A density= 2.3 g/mL
Block B density= 5.9 g/mL
Block C density= 9.8 g/mL
Block D density= 0.5 g/mL

Answer 6

Block A,B, and C would sink because they are denser than water (1 g/mL)

Block D would float because it is less dense than water (1 g/mL)

Question 7

Virus info?

Answer 7

Size: Varies widely
Shape: Varies widely
Structure: 2 basic parts: a protein coat and an inner core. Virus is non-living!!
Reproduce: Only inside a living cell
Treatment: Bedrest and fluids
Extra Info: Virus is a tiny, non-living particle that enters and then reproduces inside a living cell. Prevention= Vaccine

Question 8

Bacteria Info?

Answer 8

Size: Microscopic but some are as big as a period
Shape: Spherical, rod-shaped, spiral
Structure: Single-celled, prokaryotes (no nucleus), heterotrophic and autotrophic
Reproduce: Asexual involves only 1 parent cell. Ex. binary fission. Sexual involves 2 parent cells. Ex. Conjugation
Treatment: Antibiotics
Extra:

Question 9

Fungi Info?

Answer 9

Size: Range from tiny unicellular yeasts to large multicellular fungi
Shape: Club, sac, zygote
Structure: Have cell walls, Eukaryotes (nucleus), heterotrophic
Reproduce: Asexual reproduction requires adequate food and moisture. Spores, fruiting body. Yeast uses budding
Treatment: Anti Fungal
Extra:

Question 10

protists Info?

Answer 10

Size= Varying
Shape= Pseudopods, cilia, flagella, parasites
Structure= Eukaryotes

Question 11

Parasite Info?

Answer 11

Vary