AnswersSS 25-26 Environmental Science ALaboratory Tools and Safety

Laboratory Tools and Safety Answers

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A transmission electron microscope would be the best microscope choice to study _______.a.structures smaller than cellsb.single celled organismsc.plant leavesd.amphibian organs

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Scientists use different types of microscopes to observe objects that are not visible to the naked eye. A scientist is reviewing various samples of pond water to determine what species of microorganisms live in the pond. The scientist wishes to make drawings of the structure of each microorganism and study each one's method of movement. Which of the following microscopes would be best for the scientist to use? a. transmission electron microscope b. scanning electron microscope c. compound light microscope d. dissecting microscope Please select the best answer from the choices provided

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Fume hoods are used to _______.a.prevent fires from spreading in the labb.put out firesc.prevent toxic gases from spreading through the labd.clean chemicals off the body

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The proper protective equipment for working with hazardous chemicals in the lab includes, gloves, lab coat, goggles, and a fume hood.

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Electron microscopes have much higher magnification than compound light microscopes.

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There is more than one kind of balance used in the laboratory.

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Safety equipment like fire extinguishers and fire blankets are used to prevent accidents.

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There is only one tool used to heat equipment in the laboratory.

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If an experiment involves a large volume of liquid a _______ would most likely be used to hold it.a.test tubeb.graduated cylinderc.hot plated.beaker

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Which of the following microscopes provide 3D images of samples?a.dissecting microscope and compound light microscopeb.dissecting microscope and scanning electron microscopec.scanning electron microscope and compound light microscoped.compound light microscope and transmission electron microscope

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Socks are an important component of your exercise clothing because they __________.A.provide a good way to express your individualityB.increase the amount of calories you use while exercisingC.eliminate the need to wear high-quality shoesD.keep your feet dry while exercising

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Which of the following statements about physical fitness is TRUE?A.Physical fitness is a continuous, changing state.B.Physical fitness is influenced by many factors.C.Physical fitness is individualized to each person.D.all of the above

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Exercise provides a healthy outlet for feelings, which helps improve __________.A.emotional healthB.mental healthC.spiritual healthD.environmental health

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Lifestyle choices are usually an important factor in the development of heart disease.

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Which of these medical exams most thoroughly evaluates a person's ability to participate in exercise?A.PAR-QB.exercise stress testC.medical evaluationD.medical screening

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All factors that influence our physical fitness can be controlled.

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Which of the following is NOT a symptom associated with hypertension?A.nosebleeds B.regular heartbeatC.chest painD.vision problems

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Your living environment, whether urban or rural, can affect your level of physical fitness.

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Rubber suits are instrumental for increasing weight loss during an exercise program.

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The FITT principles of training include __________.A.fundamental, intensity, time, and typeB.frequency, intensity, time, and typeC.frequency, individual, time, and typeD.frequency, intensity, tough, and time

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