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Tolliver 8th Grade

Science TN Ready

QuestionAnswer
List the steps of the scientific method State the problem. Gather information, Form a hypothesis, Perform an experiment, Analyze the data, Draw conclusions
What are the common SI Units of Distance, Mass, Time Meter, Kilogram, Second
In an experiment, what is the control variable? The standard to which the outcome of a test is compared.
What is a hypothesis? A prediction that can be tested.
What is a theory? An explanation of things or events based on scientific knowledge that is the result of many observations and experiments.
In Science, what is a law? A statement about how things work in nature.
List the 5 traits of living organisms. Made of cells, Use energy, Reproduce, Grow, Develop.
Define the word cell. What is an organism? The smallest unit of an organism that carries on the functions of life. Any living thing.
What is homeostasis? An organism’s ability to regulate internal, life-maintaining conditions.
Describe spontaneous generation. The idea that living things come from nonliving things.
What is biogenesis? The theory that living things come only from other living things.
How are organisms grouped? Kingdom, Phylum, Class, Order, Family, Genus, Species
Describe Binomial Nomenclature. The two-word naming system used to name organisms
What is Natural Selection? Theory that states that organisms with traits best suited to their environment are more likely to survive and reproduce.
Describe Evolution. Change in inherited characteristics over time.
What is a species? Group of organisms that share similar characteristics and can reproduce among themselves to produce fertile offspring.
Describe variation. Inherited trait that makes an individual different from other members of its species
How is sedimentary rock formed? It is formed when layers of sand, silt, clay, or mud are pressed and cemented together or when minerals are deposited from a solution.
What is Relative dating? Gives only an estimate of a fossil’s age. Scientists compare the ages of rock layers found above and below the fossil layer.
What is Radiometric dating? Uses the decay rate of radioactive isotopes to give a more exact dating of the fossils.
What is embryology? The study of embryos and their development.
What are homologous structures? Body parts that are similar in origin and structure. Examples: porpoise flipper, frog forelimb, human arm, and a bat wing.
What are vestigial structures? Structures that do not seem to have a function
Name the 5 clues about evolution Fossils, embryology, homologous structures, vestigial structures, and DNA
What is biodiversity? Refers to the variety of life in an ecosystem.
Why biodiversity is important in an ecosystem? Can help improve food crops. Provides people with useful materials. Wood and bamboo, cotton and wool, medicines from wild plants
3 things that reduce biodiversity in an ecosystem? Pollution, Ozone depletion, and Global warming
Which ecosystems have the highest biodiversity? Warm, moist climates. Tropical regions of the world are home to two-thirds of Earth’s land species.
What is an ecosystem? Includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere).
Define acid rain. Results when sulfur dioxide and nitrogen oxide released by industries and automobiles combine with water vapor in the air
Compare and Contrast Endangered species and Extinct species. Species that is in danger of becoming extinct; species that was once present on Earth but has died out.
What is an introduced species? Species that moves into an ecosystem as a result of human actions
What are the 2 goals of conservation biology? What law supports it? The study of methods for protecting biodiversity; To protect the species from harm. To protect the species’ habitat. U.S. Endangered Species Act of 1973.
Name ways to prevent extinction of species?
How can an endangered species be reintroduced into its original habitat?
Name the 6 ways to Protect Biodiversity?
What is measurement? How do measurements describe events.
What is estimation? How do you estimate measurements?
Compare and contrast Precision and Accuracy?
What are significant digits? Name the 3 times that zeros are significant.
What does SI stand for? What is the SI unit, for temperature? for Volume?
How much does Deka, Hecto, Kilo, Mega, Giga represent?
How much does Deci, Centi, Milli, Micro, Nano represent?
Compare and Contrast Mass and Weight? If you were on the moon, would your weight be the same? Would your mass be the same?
What tools do we use to measure mass? Liquid/Fluid? Length?
How many seconds are in 1 min? How many minutes in 1 hr? How many hours in 1 day? How many days in 1 week? How many weeks in 1 yr?
What is rate? What is speed? What is acceleration? Give an example of each.
What is the formula for the volume of a cube/prism? volume of a cylinder?
What's the formula for the volume cone? volume of square based pyramid?
Describe when a line graph is most useful? a bar graph, and circle graph?
When is a scientific drawing most useful? a photo? a movie?
Define Physical properties.
How can your senses help describe matter?
How can matter be described by state?
Compare and Contrast Solids, Liquids, and Gases?
What 3 properties depend on size? What 3 properties do not depend on size?
What are magnetic properties? Give examples of rocks w/ magnetic properties?
What is a chemical property? Give examples.
What is a physical change? Give examples. Cutting, tearing, dissolving, solid, liquid, gas.
What is vaporization?
What is sublimation?
What is deposition?
What is a Chemical change. List the 5 signs of a Chemical change.
What is alternating current? What is direct current?
How do you make an electromagnet?
Compare and contrast a generator, motor, and transformer.
What is an aurora? Give an example.
What is superconductor? How is a superconductor different from a conductor?
What voltage do power plants transmit? What is the voltage reduced to for your house?
What is a magnet? When do two magnets attract? Repel?
What is a magnetic field? What direction does the magnetic field flow?
What is induction? How do materials become magnetized?
What is Newtons' Third Law of Motion?
How do rockets take off? Why are spacecrafts in orbit weightless?
What is weightlessness? How does free fall cause weightlessness?
What is Newton's Second Law?
What is the formula for acceleration?
What are the SI units of force? What are the units for a Newton?
What is gravity? What are the SI units of gravity?
What is weight? Compare and contrast weight and mass?
How do you slow down acceleration?
What is circular Mottion? What is centripetal force?
How do satellites stay in orbit? How fast must a satellite travel to stay in orbit?
What is air resistance?
What is Newton's First Law of Motion
Created by: Ytolliver