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Tolliver 8th Grade
Science TN Ready
| Question | Answer |
|---|---|
| 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
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