It is important to wear proper protective equipment in lab even when not actively performing experiments because accidents can affect any researcher, even one not working on an experiment.
Scientific models can never be changed.
An independent variable isa.directly changed by the experimenter.b.manipulated by changes to the dependent variable.c.a variable that is kept constant.d.a variable that is used as a control.
Judging and evaluating advertisements requires critical thinking because _______. a.advertisements can contain confusing, misleading informationb.all advertisements contain false informationc.advertisers always want to convince consumers to buy unnecessary itemsd.truth in advertising laws ensure the accuracy of information in advertisements
Scientists best apply critical thinking in their work through _______.a.the scientific methodb.observationc.hypothesesd.experimentation
The greatest difference in magnifying power is between _______.a.dissecting microscopes and compound light microscopesb.transmission electron microscopes and dissecting microscopesc.scanning electron microscopes and transmission electron microscopesd.compound light microscopes and scanning electron microscopes
Which of the following statements about idea models is not true?a.Idea models depict a concept.b.Idea models are typically used to predict natural disasters.c.Idea models are typically in the form of a graph or equation.d.Idea models are used to show the relationship between variables.
Which of the following is an inference? a. The flower is pink. b. Vinegar has a pungent aroma. c. A dog barks. d. A cup with steam coming from it will be hot to the touch. Please select the best answer from the choices provided
What is 1550 dm expressed in hectometers?a.1550000 hmb.155.0 hmc.15.50 hmd.1.55 hm
Which of the following is the SI unit used to measure temperature?a.kilogramb.literc.meterd.Kelvin
Many types of scientific equipment are used to perform different functions in the science lab. Which of the following combinations of equipment would be needed to bring one liter of water to 85°C? a. graduated cylinder, balance, beaker and hot plate b. graduated cylinder, beaker, thermometer and hot plate c. test tube, thermometer, and Bunsen burner d. test tube, electronic balance and hot plate Please select the best answer from the choices provided
Which of the following is not an advantage of using the metric system?a.The basic units of measurement are related to each other.b.The units are based on multiples of ten.c.The units are used internationally.d.It was designed in France in 1791.
There is no difference between the question and hypothesis steps of scientific inquiry.
Which of the following is likely to be the most valid source of information about pollution?a.a website supported by manufacturing companiesb.an internal report by the Environmental Protection Agency (EPA)c.a website supported by environmental groupsd.a television news program
Various pieces of safety equipment are used in the lab to provide protection against injury. Which of the following pieces of lab safety equipment is least likely to be used if proper eye goggles are being worn? a. first aid kit b. safety shower c. eye wash station d. fire extinguisher Please select the best answer from the choices provided
How many significant figures are in the measurement 1.050 L?a.1b.2c.3d.4
A scientific theory can never be disproven.
What is the main purpose of scientific models?a.The main purpose of models is to have a physical object to which to refer.b.The main purpose of models is to represent observations.c.The main purpose of models is to study systems that no longer exist.d.The main purpose of models is to gain a better understanding of the world.
There is only one tool used to heat equipment in the laboratory.
Identifying the single solution to a situation or problem is a crucial element of critical thinking.
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