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Stack #9275
| science 14 questions | science 14 answers |
|---|---|
| What does WHIMS stand for? | Workplace Hazardous Materials Information System. |
| What does MSDS stand for? | Material Safety Data Sheet. |
| What is matter? | Anything that takes up space. |
| What are the 5 particle theory of matter? | All matter is made of very small particles. All particles in a pure substance are the samae. There are spaces between particles. Particles are always moving. The particles in a substance are attracted to each other. |
| What are the 3 states of matter? | Solid, Liquid, And Gas. |
| What are physical properties and chemical properties? | Properties of matter. |
| What are tratis of physical properties? | Shape, coulor, what state it is at room temperature, freezing temperature, boiling point, how it feels, how hard it is, how it smells, if it is magnetic, how well it conducts electricity, how flexable it is, how dense it is. |
| What are traits of chemical properties? | If there is change in smell, coulor, temperature, how easily it catches fire and burns, how it reacts with other substances, whether it appears that new substances have been produced. |
| What is a solute? | The substance that dissolves. |
| What is a solvent? | Substance which the solute dissolves. |
| What is concentration? | The amount of solute in a solution. |
| What are the properties of acid? | Tastes sour, change litmus paper red, react with metals, Ph less than 7, corrosive, neutrilize bases, conduct electricity. |
| What are the properties of a base? | Tastes bitter, change litmus paper blue, feel slippery, Ph more than 7, corrosive, neutrilize acids, conduct electricity. |
| What is brownian motion? | The jiggling motion particles make. |
| What are the 3 forms of heat transfer? | Conduction, convection, and radiation. |
| What is conduction? | Is the method of heqat transfer taht requires contact. |
| What is convection? | The movement of matter in the form of currents. |
| What is radiation? | The transfer of heat by electro magnet waves. |
| What is a sea breeze? | A breeze blowing from sea to land. |
| What is a land breeze? | A breeze blowing from land to sea. |
| What is work? | Work is done when a force moves an object. Work is measured by force X distance |
| What are simple machines? | They have one movement. |
| What is an example? | Inclined Plane |
| What is a first class lever? | When the fulcrum is between the load and effort |
| What is a second class lever? | The fulcrum is at one end and effort ant the other end with the load in betwwen. |
| What is a third class lever? | Where the fulcrumi s at the end. |
| What is a distance multiplier? | Moves a load through a large distance but requires a short effort distance. |
| What is a force multiplier? | A simple machine that easily moves a large load. |
| What is a pulley? | Is a grooved wheel. |
| When is it a simple machine? | When a rope is threaded around it. |
| What are fixed and moveable pulleys? | In a fixed pulley the effort force is equal to load force. In a moveable pulley it moves with the load. |
| What is efficiency? | Is a comparison of the work the machine does with the energy it uses to do that work. |
| what is a compound microscope? | A magnifying device that combines the magnifying power of both an objective lens and an eyepiece lens. |
| What is an electron microscope? | A magnifying device that uses a beam of electrons instead of light to create an image of 600 000 times the original size. |
| What are the 2 types of electron microscope? | The transmission electron microscope, and thescanning electron miroscope. |
| What are the 10 parts of the telescope? | Light source, diaphram, stage, stage clips, objective lens, tube, eyepiece, course adjustment knob, fine adjustment knob, and the arma nd base. |
| What is the order of the smallest unit of matter to the largest unit of life? | Atoms, molecules, organelles, cells, tisuues, organs, system, and organisms. |
| What are the 2 types of cells? | Plant and animal. |
| What organelles are in a animal cell? | nucleus, cytoplasm, mitochondrion, vacuole, endoplasmic reticulum, golgi body, and cell membrane. |
| What organelles are ina plant cell? | Nucleus, cytoplasm, mitochondrion, vaculoe, endoplasmic reticulum, golgi body, cell membrane, cell wall, and chloroplasts. |
| What is the nucleus? | Controls all the parts of the cell. The brain of the cell. |
| What is a cytoplasm? | Holds all the other organelles in place. |
| What is a mitochondrion? | Releases energy in the cell. This is the powerhouse of the cell. |
| What is a vaculoe? | It stores water, food, and waste that the cell annot use right away. |
| What is a endoplasmic reticulum? | It transports materials. |
| What is the golgi body. | It packages and transports proteins and holds waste products until the cell is ready to get rid of them. |
| What is the cell membrane? | It seperates the inner parts of the cell from the surronding enviornment. |
| What is the cell wall? | Provide protection and strength for the cell. It is only in the plant cell. |
| What is the chloroplasts? | Contains a pigment called chlorophyll, which gives color to plants. Is only in plant cells. |
| When was the first microscope made? | In 1932 |
| What is photosythesis? | When plants make their own food. |
| What is cellular respiratuon? | When the food that is produced undetgoes a chemical change and releases energy. |
| What is the equation for cellular respiration? | Glucose + oxygen-------------------------carbon dioxide + water + energy |
| What is the difference between photosynthesis and cellular respiration? | Photosynthesis stores energy and cellular respiration releases energy. |
| What is in the digestive system? | Teeth, mouth, esophagus, large intestine, rectum, salivary glands, stomach, gall bladder, small intestine, anus. |
| What ius in the nervous system? | The brain, spinal cord, nerves. |
| What is in the circulatory system? | The heart, veins, and arteries. |
| What is in the human heart? | Arteries, aorta, pulmonary artery, veins from lungs, left atrium, valve, left ventricle, large vein from upper regions of the body, right atrium, right ventricle, and large veins from lower region of the body. |
| What is in the urinary system? | The kidney, aorta, renal artery, renal vein, uretha, urinary bladder, and ureter. |
| What does the kidney do? | Kidneys filter blood that has collected wastes from cells and then transports these wastes to the urinary bladder. Urinary bladder holds wastes until they are excreted through the uretha. |
| What does the esophagus do? | Pushes food to stomach through wave like muscle contractions. |
| What does the stomach do? | Muscles contract to mix food; Releases acids that activate enzymes to digest food ; dissolves food into liquid form. |
| What does the samll intestine do? | Neutrilizes stomach acids; absorbs 80 to 90 percent of nutrients; releases digestive juices to digest food. |
| What does the large intestin do? | Absorbs vitamins, minerals, and water. |
| What does the anus do? | Discharges solid mass of undigested food called feces. |
| What is the role of the circulatory system? | To move blood throughout the body. |
| How many steps are in the digestive and circulatory system? | 5 |
| What is #1? | Nutrients enter the blood stream from the digestive system through the capillary walls. |
| What is #2? | The circulatory system carries digested food substances to the cells of the body. |
| What is #3? | Then, the nutrients travel around, over, and through each cell in the body. |
| What is #4? | Waste molecules pass from the cells back into the bloodstream through the capillary walls. |
| What is #5? | The circulatory system helps dispose of wasts proucts and toxic materials such as salts. These materials would harm the body if they accumulated. |
| What is a EKG? | It diagnoses disorders of the heart. |
| What is a EEG? | It studies the brains activity. |
| What is nutrition? | Is a branch of science that studies food and hgow the body uses them. |
| What nutrients do we need? | Carbohydrates, proteins, fats, vitamins, minerals, and water. |
| What do carbohydrates do? | They are in the form of sugar and starches are the primary source of energy for your body. |
| What are proteins? | They build body tissue, and regulate chemical activity and supply energy when arbohydrates and fat are not available. |
| What are fats? | They are stored in the body for use as an energy source when carbohydrates are in short supply. |
| What are vitamins? | They are organized according to whether they can be absorbed in fat or water. Vitamins A D E and K are in foods that contain fats. Vitamins B and C are soluble in water. |
| What are minerals? | Help carry out life functions. Minerals include calcium, phosphours, magnesium, iron, and iodine. |
| What is water? | Is essntial for life because it is used in every life function. The water you take in thruogh food and drink needs to balance the water that is eliminated from your body. |
| What is a diet? | The amount and type of food you eat. |
| What is a mixed diet? | A diet that contains a wide variety of foods. |
| What is a fad diet? | Any short lived idea or "craze" about how or what people should eat. |
| What is Canadas food quide? | It classifies food into the four food groups. |
| What are vegetarians? | People that choose not to eat animal products. |
| Wht is homeostasis? | The ability your body has to maintain an internal balance. |
| What are gallstones? | Crystalized cholesterol that forms in the gall bladder an organ in the digestive system. |
| What is diabetes? | Abnormallly large amounts of sugar in their blood and urine. |
| What are ulcers? | Consists of holes or breaks in thr lining of the esophagus and stomach. |
| What is an heart attack? | Blood flowing to the arteries suppying the heart is serverly restricted. |
| What is a cardiac arrest? | When the heart litterly stops. |
| What is a angiogram? | It provides x-ray pictures of blood cells. |
| What is a pacemaker? | Electrical device implanted under the collarbone. It simulates a steady heartbeat. |
| What is an artifical heart? | Are used because thetre are not enough human heart donors and is difficult for humans to stay alive on hearts from other species. |
| What is anorexia? | A mental illness in which a person is so afraid of gaining weight that they restrict their food intake excessively and execise compulsively. |
| What is bulimia? | A mental illness in which a person forces themselves to throw up in order to lose weight. |
| What is energy? | The ability to do work . |
| What is glucose? | A sugar produced through photosynthesis. |
| What is starch? | The carbohydrates form in which plants store excess glucose produced during photosynthesis. |
| What is the ecosystem? | The sum of the community of living things and the enviornment in which they live. |
| What is the food chain? | A model the shows how energy and matter pass from one organism to another in a ecosystem. |
| What is a producer? | A class of organisms that can make their own food usually through photosynthesis. |
| What is a consumer? | A organism that eats either a producer or another consumer. |
| What is a decomposer? | A living thing that breaks down dead plants and animals returning their chemical elements to the enviornment. |
| What is the food web? | A network of connected food chains that provides a complete model of how energy and matter are transferred from one organism to another in an ecosystem. |
| What is the primary consumer? | An animal that eats plants and producers. |
| What is the secondary consumer? | An animal that eats primary consumers ; an animal that eats animals that eat plants. |
| What is as tertiary consumer? | An animal that eats secondary consumers; an animal the eats animals that eat other animals. |
| What is a ecological pyramid? | A model showing relative numbers of organisms or amount of energy available in each level of the food chain. |
| What is the pyramid of energy? | A model showing the total amount of chemical energy that flows |
| What is a cycle? | The re-use of matter in an ecological systems. |
| What is a water cycle? | The re-use or cycling of water in m\nature through condensation precipitaion and evaporation. |
| What are cabon and oxygen cycles? | The re-use or cycling of cardon and oxygen in nature through photosynthesis, cellular respiration and decompisition. |
| What is the nitrogen cycle? | The re-use or cycling of nitrogen in nature through food chains, decompisition, and fixing/producing bacteria. |
| What is compost? | A mixture of decomposing plants an soil. |
| What is population? | Any group of individuals of the sdame species living together at the same place at the same time. |
| What is idividual? | One member of population. |
| What is death rate? | The number of individuals that died during a specific time. |
| What is immigration? | Arrivals into a population. |
| What is birth rate? | The number of young produced by a population over a period of time. |
| What is emigration? | Departures of a population |
| What is the limiting factor? | The factors that limit the number of individuals that an enviornment can support. |
| What is carrying capacity? | The number of induviduals that an enviornment can support. |
| What is abiotic limiting factor? | The non living factors such as weather and altitude that limits the number of induviduals that an ecosystem can support. |
| What is biotic limiting factor? | The living parts of an ecosysem taht affect the size of a population the ecosystem can support. |
| What is competition? | The competition among organisms for resources such as food shelter light and water. |
| What is a parasite? | Any organism that live4s on or in asnother organism at the expense opf that organism. |
| What is a host? | Any organism that has a parasite. |
| What is parasitism? | The relashinship between host and parasite. |
| What is a predator? | Any animal that catches kills and eats other animals. |
| What is prey? | Any animal that is eaten by other animals. |
| What is predation? | The killing and eating of one animal by another. |
| What is the reproductive rate? | The rate at which a pair of organisms reproduce. |
| What are exotic species? | Ant species that does not occur naturally in the ecosystem. |
| What is a pesticide? | Any chemical spray that kills pests plants or animals. |
| What is biological control? | Any organism used to limit a population of unwanted plants or animals. |
| What is a biotic community? | All the living components of an ecosystem. |
| What is a abiotic enviornment? | Abiotic factors all the non-livinfg components of an ecosystem. |
| What is a terrestrial ecosystem? | Any ecosystem on land. |
| What is climate? | Average weather conditions based on long tem records. |
| What is topography? | The physical features in the area. |
| What is altitude? | The measure of the height above sae level. |
| What is latitude? | A measure in degrees of how far north or south a place is from the equator. |
| What is soil? | The thin layer of rock fragments and decomposed palnt matter that covers the land. |
| What is clay? | The smallest particles that make up soil. |
| What is silt? | Tiny rock particles found in soil. |
| What is sand? | Grain sized pieces of rock found in soil. |
| What is gravel? | The largest particle found in soil. |
| What is humus? | The part of soil consisting of broken down palnt fibres soil particles and decayed organisms. |
| What are soil crumbs? | Particles of humus that has formed clumps. |
| What is leaching? | The washing out of materials by water running through the soil. |
| What is horizon? | The horizontal layers in soil. |
| What is topsoil? | The top layer of soil. |
| What is biome? | A large geographic area containing distinct plants and animals. |
| What is boreal forest? | The biome consisting of mixed forests of aspen spruce and pine trees. |
| What is mountain and foothill? | A biome characterized by coniferous and decidous trees and extreme variations in tempature an precipitation. |
| What is a parkland? | The biome in which the main plants are trees and grasses. |
| What is a grassland? | A biome in which grass is the main vegetation and prcepitaion is low. |
| What is diversity? | A description of the variety of living things in an area. |
| What is biodiversity? | A description of the variety of living things in an area. |
| What is extintion? | The elimination of a species from earth. |
| What is a habitat? | Refers to an organisms shelter and food. |
| What is a species at risk? | Plants and animals close to becoming extinct. |
| What is biodegradeable? | Any material that can be broken down by organisms in the enviornment. |
| What is non-biodegradeable? | Any material that cannot be broken down by the organisms in the enviornment or broken down very slowly. |
| What is a pesticide? | Any chemical spray that kills "pests" plants or animals. |
| What is insecticide? | Any chemical that kills unwanted insects. |
| What is herbicide? | Ant chemical that kills unwanted plants. |
| What is biological magnification? | The accumulation of chemicals in the bodies of animals found higher on the food chain. |
| What is fertilizer? | A natural or chemical substance used to add nutrients to soil and thus increase crop yields. |
| What is resistance? | An organisms natural ability to not be killed by a pesticide. |
| What is eutrophication? | The buildup of nutrients in an aquatic ecosystem causing excessive plant growth and reduse oxygen. |
| What are fossil fuels? | The group of fuels derived from the remains of organisms that lived millions of years ago. |
| What is the greenhouse effect? | The phenomenon caused by an insulating layer of carbon dioxide around earth that lets radiation in but keeps heat from escaping. |
| What is global warming? | The trend toward increased average temperatures caused by excess carbon dioxide in the earths atmosphere. |
| What is a refrigerant? | Any substance that cools. |
| What are CFC's? | Chloroflurocarbons |
| What is the ozone layer? | An invisible layer of gas in the atmosphere about 15-35 km above earths surface that absorbs harmful uv rays. |
| What is a landfill? | A waste disposal area that consists of a large pit in the ground and various features that prevent toxic chemicals from entering the enviornment. |
| What does it mean to reduse? | One of the 3 stratigies for redusing waste. |
| What does it mean to re-use? | One of the 3 ways to reducse waste new uses for things that would of been thrown away. |
| What is recycling? | One of the 3 ways to reduse waste products that have been thrown away used to make new products. |
| What are the wetlands? | Any area in which water remains at or just below the ground's surface. |
| Whatis restoration | A method of resoring wetlands by blocking drainage ditches and building small dams to allow flowing. |
Created by:
cassy