Science Test Pointers

1. Take your time and give each question your best shot!

2. Essays-answer each part of the question completely!

3. You are not penalized if you have inaccurate info along with the correct answer…so write more instead of less

4. Double check your answers!

What factors determine different

biomes?

A biome is a large population of living things

Ex: desert, grasslands, tundra

Answer:

Amount of Precipitation

Temperature

Define and give an example:

Convection

Conduction

Radiation

Answer: (examples on next page)_

ALL 3 TRANSFER HEAT!

Convection: by the movement of heated fluid (liquid or gas)

Conduction: across a medium from a source of higher temp to lower temp.

Radiation: by electromagnetic waves. No medium needed.

Examples: Convection Ex:Steam rising from a

pot of boiling water

Conduction Ex: metal pot on stove is heated by burner

Radiation Ex: Earth is heated by electromagnetic waves that travel through space from the sun

Define: Fission

Fusion

Give an example of each

Answer: (examples on next page)

FISSION: reaction that produces energy when heavy radioactive nuclei spilt apart into fragments that together have less mass than the original isotopes

FUSION: process in which 2 nuclei come together fo form a 3rd, larger nucleus, releasing energy.

Examples:

FUSION: New elements being formed in the intense heat of stars

FISSION: Neutron hitting uranium-235 to release energy or the power generated in a nuclear submarine’s reactor

Describe 3 ways of estimating geologic time

Answer1. Radiometric dating: (using halflife of

isotopeps do determine age of materials)

2. Rock sequencing: analyzing order of rack strata to estimate their relative ages. Older rocks tend to be deeper

3. Fossils: Remains or traces of prehistoric organisms

Define and give an example of:

Potential EnergyKinetic Energy

Potential Energy The energy of position Example: potential energy is a

pendulum at the top of its swing

Kinetic Energy The energy of motion Example: kinetic energy is a pendulum

in motion

State Newton’s 3 Laws of Motion

1. Inertia: Unless acted on by an outside force, a body in motion remains in motion and a body at rest stays at rest!

2. Change in motion is proportional to the force used to produce the change.

3. For every action there is an equal and opposite reaction

Punnett Squares

What would be the percentage of white offspring?

Black fur in rabbits is dominant to white fur. Given the genotype of the following parents answer the following:

Father is Bb Mother is bb

Answer:

B b

b

b

Bb bb

Bb bb

50% Black, 50% white offspring