Final Exam (S2) Integrated Science. Ms. Phillips 2013-2014. Which of the following internet sources are reliable sources of information:. Websites for clubs or organizations that are selling a product Any internet site is reliable

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Final Exam (S2) Integrated Science

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Which of the following internet sources are reliable sources of information: • Websites for clubs or organizations that are selling a product • Any internet site is reliable • Websites that are used to share information about a high school club • Websites like wikianswers.com, Google or ask.com • Websites with web addresses that end in .gov or .edu

When conducting background research using the scientific method, the last information source you us is: • Internet • Dictionary or Thesaurus • Magazine • Textbooks or other non-fiction books on the subject you are researching • Encyclopedia

Which of the following items are true about subjects for inquiries: • Human subjects must volunteer, must be available to participate, must understand what they will be expected to do and must be allowed to stop participating at any time. • Subjects can only be people • Science studies must be approved by the science board of directors • All of the above • None of the above

Which of the following items are true about scientific observations: • Involves the five (5) senses • Observations can be objective or subjective • Observations trigger the question that leads to an inquiry • All of the above are correct • Observations only happen in laboratories

Velocity is: • the slope of a linear graph. • speed with direction • acceleration divided by displacement • the same in all reference frames • All of the above

Two or more velocities can be combined by _________________________. • graphing the slope • determining the rate • using vector addition • using vector division • calculating the instantaneous speed

Acceleration is equal to _______________. • distance divided by time • change in speed divided by time • the slope of a distance-time graph • change in speed multiplied by time • none of the above

Air resistance depends on ________. • the weight of a moving object • the velocity of a moving object • the mass of a moving object • the inertia of a moving object • humidity and human effort 12 Forces & Motions

An object changes direction as it moves. Which of the following is FALSE? • The acting force is not at zero. • An unbalanced force acts on the object. • The object is accelerating. • A centripetal force must act on the object. • The object’s inertia remains unchanged. 12 Forces & Motions

Which has the greatest momentum? • A huge bolder at rest. • A car traveling on a highway. • a small pebble at rest. • a baseball after it is hit with a bat. • a small pebble that is tossed into the air. 12 Forces & Motions

A resting object exerts pressure equal to _______________. • its mass times its contact area • its weight times its contact area • its mass divided by its contact area • its weight divided by its contact area • none of the above 13 Forces in Fluids

The amount of water pressure you experience while swimming in a pool depends on _______________. • the area of the pool • the volume of water in the pool • your buoyancy • how deep you are in the water. • who is measuring the pressure 13 Forces in Fluids

Which of the following is NOT true about the SI unit of pressure? • It is used by fluids only. • It is called a pascal. • It is equal to one newton per square meter. • It represents force per unit area. • All of the above 13 Forces in Fluids

Blaise Pascal discovered that changes in pressure _______________. • are transmitted equally throughout a fluid • increase with depth of fluid • decrease with depth of fluid • depend on the area • have no effect on anything 13 Forces in Fluids

In a hydraulic lift system, the output force is greater than the input force because _______________. • a larger pressure acts on the output piston • a larger pressure acts on the input piston • the fluid pressure acts on areas of different sizes • of Bernoulli’s principle • there is no evidence to explain it 13 Forces in Fluids

Which of the following is NOT true about Bernoulli’s principle? • The pressure within a moving fluid is greater than the pressure within a nonmoving fluid. • As a fluid’s speed increases the pressure within it decreases • It helps explain the lift of an airplane • It explains why airline flights are delayed • When a moving fluid slows, the pressure within it increases 13 Forces in Fluids

The buoyant force acting on a submerged object is equal to _____. • the object’s mass • the mass of the fluid displaced by the object • the object’s volume • the weight of the fluid displaced by the object • the amount of liquid involved 13 Forces in Fluids

A partially submerged object floats when _______________. • the object’s weight is equal to the buoyant force • the object’s mass is equal to the buoyant force. • the object’s weight is greater than the buoyant force. • the buoyant force is downward. • the object has not sunk further into the liquid. 13 Forces in Fluids

When air is blown between two balls suspended from strings, the balls come together and touch. This is explained by _______________. • Archimedes’ principle • Pascal’s principle • the hydraulic principle • Bernoulli’s principle • the Pauli exclusion principle 13 Forces in Fluids

In a hydraulic system, the area of the output piston is three times larger than the area of the input piston. How is the output force related to the input force? • It is nine times smaller • It is three times larger • It is nine times larger • It is three times smaller • It is the same 13 Forces in Fluids

Mechanical energy is ___________. • found in machinery only • usually measured at the atomic level • the sum of the chemical and thermal energy of and object. • the sum of the kinetic and potential energy • none of the above 15 Energy

An example of the conversion of gravitational potential energy into kinetic energy is _______________. • a gasoline-powered engine • a falling raindrop • striking a match • a nuclear explosion • a hockey puck sliding on ice 15 Energy

The law of conservation of energy states that _______________. • energy cannot be created or destroyed • energy cannot be converted from one form to another • energy resource must be used efficiently • energy is constantly being lost to friction • conserving energy leaves extra energy for other activities 15 Energy