Abeka Science: Matter and Energy Test 3 updated version

Which law states that temperature and pressure are directly related when volume is held constant ?

b)

What is the density of an object with a mass of 27 g and a volume of 9.0 cm3?

How many significant digits are in 0.020 63?

(b) 4

What is the attractive force between unlike molecules?

(d) adhesion

What device measures altitude?

(d) altimeter

What is the average speed of a person who walks 28 km in 7.0 h?

(b) 4.0 km/h

What is the ratio of input distance to output distance?

(a) IMA

What law states that the force required to accelerate an object at a certain rate equals the object's mass times the desired acceleration?

(c) second law of motion

What is the rate of doing work?

(c) power

What is the product of an object's mass and velocity?

(b) momentum

What causes an object to travel in a curved path rather than in a straight line?

(b) centripetal force

What principle states that the buoyant force experienced by an object is exactly equal to the weight of the fluid displaced?

(d) Archimedes' principle

What is the SI unit of pressure?

(a) pascal

Who discovered the laws of motion and gravitation?

(b) Sir Issac Newton

What is the efficiency of a machine that has work output of 630. J and a work input of 700. J?

(c) 90.0%

What is the fluid friction that tends to slow an object as it moves through a fluid?

(a) drag

What is the force on an object that is generated by relative motion between the object and a fluid and that is perpendicular to the direction of the fluid flow?

(c) lift

What is the science of shaping objects to allow the smooth flow of fluids around them and reduce drag?

streamlining

What property of a gas must remain constant for Boyles's law to be used?

temperature

What is the system of measurement was designed by French scientists to be simpler to learn and use than the F.P.S. system?

metric system

What is the mass in a certain volume?

density

What type of lever has the input force applied between the fulcrum and output force?

class 3 lever

What law states that if pressure of a gas is constant, its volume and temperature are directly proportional?

Charles's law

What principle states that events observed in the universe have rational causes?

principle of causality

What is the point at which a submarine is completely underwater but not sinking?

neutral buoyancy

What is the term for a fall velocity at which the force of air resistance equals the object's weight?

terminal velocity

What valid form of inference supposes that when the consequent is false the antecedent must be false?

(b) denying the consequent

What is the ability for other scientist to reach the same conclusion by performing the same experiment under different conditions and by performing other experiments to test the same hypothesis?

(d) reproducibility

What is the amount of gravitational pull on an object?

(b) weight

What fallacy occurs when a term is misleading used with two different meanings in a single argument?

(c) equivocation

Which of the following expresses 2702 correctly in a scientific notation?

(a) 2.702 x 103

What is the car's acceleration in the direction of motion velocity changes from 20. m/s to 60. m/s in 10. s?

(c) 4.0 m/s2

What is the force exerted per unit of area?

(c) pressure

What is the factor that is changed to test a hypothesis?

(b) independent variable

In the engineering design process, what is any characteristic required for a design to function?

(b) criteria

What is an upward force exerted by a fluid on a solid object placed in the fluid?

(a) buoyancy

A hollow silver cube has a mass of 30. g and a volume of 35. cm3. How much mass must be placed inside the cube to give the cube neutral buoyancy in water which has density of 1.00 g/cm3?

(b) 5.0 g

What is a vector representing an object change in position?

(c) displacement

What is a conclusion based on reasoning from evidence?

(b) inference

What is the magnitude of the force required to accelerate a 2000 kg truck at 10 m/s2?

(d) 20,000N

Use dimensional analysis to covert 90.m to centimeters?

(d) 9,000cm

The phenomenon of a spinning cylinder or ball causing lift is the ? effect.

Magnus

The multiplication of the input force that a machine provides after frictional losses is ?

AMA

The term that refers to any change in velocity is ?

acceleration

A tentative explanation to describe a scientific process is a ?

hypothesis

The amount of matter in an object is?

mass

The metric prefix that means 1/100 is ?

centi-

The gravitational pressure of the air is called?

atmospheric pressure

The SI unit of work is the ?

joule

The state of matter in which molecules can move freely and conform to the shape of the container but remain attracted is the LIQUID state

true

The ability of a gas to be easily squeezed and compacted into smaller containers is CAPILLARITY

false, compressibility

The phenomenon in which a liquid in a thin tube rises above or falls beneath its won level is SURFACE TENSION

false, capillarity

The device that uses an airtight metal box with then, flexible walls to measure pressure is an ANEROID BAROMETER

true

According to Archimedes an object immersed in water appears to lose its DENSITY

false, weight

The closeness of a measurement to the quantity's actual value is its PRECISION

false, accuracy

An object that hangs from a fixed point and swings back and forth because of gravity is a PENDULUM

true

The distance traveled by an object per unit time is MOTION

false, speed

A special from of inclined plane that modifies the applied force and directs it to the side is a SCREW

false, wedge

When a glass of water spills on a table, why does the water bead and puddle instead of flattening to the smooth surface?

(a) The water coheres and pulls back from the table

When you shake a carbonated beverage, why does the beverage fizz explode when the top is opened?

(c) The pressure builds from the gas inside the container

Michael is conducting an experiment to see which toys his cat prefers. He tested three different toys.........

(d) His bedroom and cat's room

When skating on a smooth sheet of ice, a skater pushes on the ice with his skates to move forward....

b) He applies a backward pressure on the ice

On a consistently breezy day Grace is flying a large foam airplane that has been rising......

(c) The airplane reached its critical angle attack and no lift developed

The small piston of a hydraulic press has an area of.....

32N

A steel crap trap with a volume of.....

710N