CA #2 Review
Quiz by Sharon Huizar
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- Q 1/36Score 0In some areas of science, scientist do fieldwork instead of a laboratory work. For which investigation requiring fieldwork, would a scientist need to make observations using this tool?29The study of plant distributionThe study of atomic particlesThe study of nesting birdsThe study of tree growth rings
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- Q1In some areas of science, scientist do fieldwork instead of a laboratory work. For which investigation requiring fieldwork, would a scientist need to make observations using this tool?The study of plant distributionThe study of atomic particlesThe study of nesting birdsThe study of tree growth rings30s
- Q2In recent decades, average global temperatures have increased significantly. The cause or causes of these increases are being investigated. Some people say that widespread destruction of the Amazon rain forest contributes to global warming. Which mechanism (reason) might be cited in the support of that hypothesis?Deforestation causes water on the ground to reflect sunlightDeforestation reduces the number of plants able to absorb carbon dioxidePhotosynthesis produces energy which gives off heatPlants produce energy during cellular repiration30s
- Q3In an energy pyramid, approximately 10% of the energy available in one trophic level is transferred to the next level. Which statement helps explain why this occurs?Organisms use most of the available energy to fuel their own life processes.Predators eat more organisms in their own level than organisms in other levels.Consumers eat both producers and other consumersProducers exist only in the lowest level of the pyramid30s
- Q4A rainforest area is experiencing a severe drought. As a consequence, the insect population has decreased. What will the insect-eating birds most likely do as a result of the drought?Move to a new area to find foodStop searching for food until it begins to rainBegin reproducing to increase populationStart the process of hibernation30s
- Q5When a cheeseburger is consumed, a person receives proteins, carbohydrates, fats, as well as vitamins. These complex energy molecule must be broken down during the digestive process in order to supply cells with usable energy. What results when large carbohydrate molecules are broken during the digestive process?Chemical energy to mechanical energyRadiant energy to chemicalRadiant energy to mechanicalChemical energy to radiant energy30s
- Q6Sarah’s lab group is trying to determine the identity of four unknown powders. Below is each student’s suggestion about how to test the powders. Sarah “Let’s heat a sample of each on the hot plate.” David “What is we mixed a little weak acid with each powder?” Michael “I think we should taste a little bit of each.” Kaylee “Let’s see which ones dissolve in water.” Which student’s suggestion is the safest way to begin?MichaelDavidKayleeSarah30s
- Q7John was conducting an experiment in which he was trying to measure the cooling effect of water poured on a substance. Which of the following tools would he use to measure that gain or loss of energy in the substance?Graduated CylinderTriple Beam BalanceThermometerBeaker30s
- Q8Photosynthesis use raw materials for converting radiant energy into a more useable form. What is the usable form of energy produced by this process?Glucose, a form of chemical energyCarbon dioxide, a form of thermal energyOxygen, a form of electrical energyCellulose, a form of electrical energy30s
- Q9The food you eat is made of complex and simple molecules. In digestion, food is broken down into simpler substances. The potential chemical energy of food is transformed into the energy used by the body to do work. What evidence exists that shows that in the human body, during digestion, chemical energy is transformed into another form of energy?Heat is released that keeps the body warmWaste material are eliminatedFood is chewed into smaller piecesRespiration or breathing takes place30s
- Q10Ryan built a biotic community by adding water plants, snails, small fish, and water to a large jug. Which best represents the energy flow in this biotic community?IVIIIIII30s
- Q11Two boxes and their masses are shown in the diagram. In which of the following situation shows work being done?A student is standing and holding the small box.A student is holding the large box 1m above the floor.A student is lifting the small box from 0.5m from the floor to a table.A student is sitting in a chair and holding both boxes.30s
- Q12Hay is made up of organic compounds. What are the main elements in many organic compounds?Carbon, Hydrogen, OxygenRadon, Oxygen, HeliumHelium, Carbon, SodiumSodium, Hydrogen, Nitrogen30s
- Q13The flow of energy in some Australian food chains is modeled in the energy pyramid below. Based on the model, which consumers would receive the greatest amount of energy captured by the producers in their food chains?Wedge-tailed eaglesEucalyptus TreeRing-tailed opossumsChuditch30s
- Q14Many processes occur in the digestive system. Which process is best classified as a physical change?Saliva converting the starch molecules in cracker into simple sugars.Digestive enzymes breaking down proteins into smaller fragments.Teeth grinding an almond into smaller pieces in the mouth.Bacteria converting lactose into simple sugars in the intestines.30s
- Q15Based on its chemical formula, which of the following substances is an organic compound?Sodium Chloride, NaClUrea, CH4N2OSilane, SiH4Ammonium Sulfide,(NH4)2S30s
