Presentation on theme: "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."— Presentation transcript:
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 3 rd, 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 submarines reactor
Describe 3 ways of estimating geologic time
Answer 1. 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 Energy Kinetic 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 Newtons 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 BbMother is bb
Answer: B b b Bbbb Bb bb 50% Black, 50% white offspring