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The Big Bang Theory is accepted at present as the best explanation of the development of the universe over time. Which of these statements is correct about this theory? (3 points)

The diagram below shows the distance traveled by two light waves in 1 second. Based on the diagram, which of these conclusions is correct? (3 points)

One astronomer has observed an apparent lengthening of the electromagnetic waves given off by a star. Which of these conclusions is correct about the star? (3 points)

NASA’s space shuttle program in Florida will end in 2011. Which of these statements best describes the outcome of this event on the locations near the space center? (3 points)

The client is receiving a medication that has been titrated to 30 mL/hr. The drug is mixed as 600 mg/500 mL. The client weighs 70 kg. How many mcg/kg/min is this client receiving? Round to the tenth. ___________________mcg/kg/min      

The picture below shows the position of Earth and two stars. Star 2 is 52 light years from Earth and 18 light years from Star 1. If Star 1 explodes as a supernova, in how many years would the explosion be seen from Earth? (3 points)

“One drop of water leaking per second from a faucet can waste more than 2,300 gallons of water per year.” The most reliable source of this information is a (3 points)

Which of these pollutants is transferred from soil to water by organic pesticides and fertilizer runoff from farms? (3 points)

A typical faucet running for two minutes could waste about 10 gallons of water. A newspaper reports that a running faucet wastes about 0.08 gallons of water per second. Which of these statements is correct about the information provided by the newspaper? (3 points)

Which of these statements best explains why scientists use models? (3 points)