1. If you replace an old measuring device with one that is more precise, what change might you expect to see in your measurements?

2. How can improvements in technology help the field of science?

3. Why is it important to keep all variables other than the dependent and independent constant?

4. Why is physics often considered to be the fundamental science?

5. Dylan has made two different chemical batteries for a physics project. He is measuring how much voltage the batteries each produce. The first battery produces 3.12 volts, and the second battery produces 2.8 volts. Using the correct number of significant figures, how much greater was the voltage produced by the first battery, compared to the second?

	0.32 volts
	0.320 volts
	0.3 volts
	0.3200 volts

6. Richard has just completed his science experiment, and collected all of the data. What is the next step that Richard needs to complete?

	recognize a problem
	form a hypothesis
	analyze results
	background research

7. Which statement best describes the relationship between science and technology?

	Science provides the knowledge that improves technology.
	Both science and technology rely entirely on the scientific method.
	Improvements in technology make doing science more difficult.
	Science and technology are essentially the same field.

8. Lynn has observed an interesting phenomenon that she would like to experiment on further. Which of the following activities may be part of her next step in the scientific method?

	look at prior experiments
	hypothesis
	create charts and graphs
	analyze the raw data
	determine the independent variable
	read articles about the topic

9. Which of the following are examples of some of the environmental costs of technological development?

	reduction in greenhouse gas emissions
	loss of forest and water resources
	more waste in landfills
	increased recycling of heavy metals
	less face-to-face communication

10. Rochelle is a chemist who primarily studies thermodynamics. Which of the following topics might Rochelle research for her job?

	the temperature required to melt a certain metal
	how light is affected by passing through a plastic lens
	how subatomic particles behave at extremely high speeds
	the amount of heat produced by a certain reaction
	the vibrations that are produced by musical instruments
	how a new engine converts thermal energy into work

11. Which of the following advancements in science was primarily achieved by Aristotle?

	the development of the heliocentric model
	the use of formalized logic in the sciences
	the discovery that all objects fall at the same rate
	the development of the atomic theory of matter

12. Robert is performing an experiment, testing to see if dissolving salt in water makes the water corrode steel rods more quickly. In this experiment, what are some values that Robert will want to hold constant.

	the type of steel the rods are made from
	the amount of time the rods spend in the saltwater
	the amount of salt dissolved in the water
	the temperature of the saltwater
	the amount of corrosion on each steel rod

13. A certain chemical reaction produces 0.0450 grams of product. How many significant figures does this measurement have?

	4
	5
	2
	3

14. Which of the following statements are examples of how technology improves human lives?

	Certain chemical propellants have depleted the Earth's ozone layer.
	Modern protective gear has made many jobs and activities safer than before.
	Understanding sound waves help scientist learn more about the behavior of light.
	Satellites allow for people across the world to communicate, even in remote areas.
	Improvements in automotive design have made cars safer and more efficient.
	The development of the atomic theory of matter helped give rise to quantum mechanics.

15. How do scientists reduce the number of unwanted variables in an experiment?

	by performing experiments under laboratory conditions
	by performing additional background research
	by conducting multiple experiments at the same time
	by only having one scientist work on each experiment

. 16. Which of the following best describes scientific facts?

	They are regularly updated as new evidence arises.
	They describe a certain phenomenon in nature.
	They are universally accepted as true.
	They predict a relationship between variables.