Which of the following is a chemical change? A.Burning wood B.Melting butter C.Breaking glass D.Tearing paper The magnitude of which of the following can be measured using the Richter scale? A.Tornadoes B.Hurricanes C.Tsunamis D.Earthquakes Which of the following characteristics is (are) unique to mammals? A.A bony endoskeleton B.Milk-producing glands C.A vertebral column D.Circulating blood cells A maritime air mass is an air mass that forms over A.an equatorial desert B.tall mountains C.a large body of water D.the South Pole Which TWO of the following objects are strongly attracted to magnets? A.Rubber band B.Iron nail C.Steel safety pin D.Plastic paper clip B.Iron nail Which of the following is generally thought to be a contributing factor to obesity? A.A sedentary lifestyle B.Restricting fat in the diet C.A sensible diet D.Regular exercise After a person completes an experiment and collects the data in a scientific investigation, which of the following is the next logical step? A.Forming a hypothesis B.Analyzing the results C.Writing a paper D.Deciding on a variable In which of the following organ systems are the brain and spinal cord found? A.Skeletal B.Muscular C.Nervous D.Endocrine Which of the following scientists is best known for research with electricity? A.Louis Pasteur B.Thomas Edison C.Marie Curie D.Gregor Mendel Which of the following organ systems is responsible for the transport of blood and nutrients? A.Circulatory B.Respiratory C.Digestive D.Nervous A device that converts electrical energy directly into mechanical energy is best described as which of the following? A.A resistor B.A prism C.A motor D.A battery Which THREE of the following actions will result in reduced energy consumption? A.Commuting to work using public transportation instead of driving alone in a gasoline-powered car B.Setting the thermostat for a home cooling system to a higher temperature in warm weather C.Leaving the engine of a gasoline-powered car running when the car will be parked for more than five minutes D.Preventing electrical appliances from drawing power in standby mode by unplugging them when they are not in use B.Setting the thermostat for a home cooling system to a higher temperature in warm weather D.Preventing electrical appliances from drawing power in standby mode by unplugging them when they are not in use A. Four different containers holding the same amount of water are left undisturbed and open to the atmosphere on the same laboratory bench. From which container will the water most likely evaporate at the fastest rate? Which of the following is an example of a mixture? A.Compound B.Solution C.Molecule D.Element Which of the following hormones is most directly involved in the regulation of blood glucose levels? A.Testosterone B.Estrogen C.Insulin D.Progesterone Which of the following holds stars together in the form of a galaxy? A.Magnetism B.Electricity C.Gravity D.Radiation Phytoplankton →Shrimp →Penguin →Seal In the food chain above, which of the following organisms is the top predator? A.Seal B.Shrimp C.Penguin D.Phytoplankton A 5 kg bowling ball and a 0.5 kg basketball are dropped from the same height. In the absence of air resistance, which of the following is true? A.The basketball will hit the ground first. B.The bowling ball will hit the ground first. C.Both balls will hit the ground at the same time. D.Earth exerts an equal gravitational force on both balls. Multicellularity and the ability to carry out photosynthesis are characteristics of which of the following groups? A.Animals B.Plants C.Fungi D.Protists Which of the following best explains why the Moon has a greater effect than the Sun on the tides of Earth's oceans? A.The Moon is larger than the Sun. B.The Moon has a greater mass than the Sun. C.The Moon has phases as viewed from Earth. D.The Moon is much closer to Earth than is the Sun. Clothing items that cling together after being tumbled and dried in a clothes dryer best illustrate which of the following? A.The electrostatic force B.The gravitational force C.The strong nuclear force D.The magnetic force