Flashcards NEW Abeka 9th Grade Science Matter & Energy Test 3

What law States that temperature and pressure are directly related what volume is held constant

Amontons Law

What is the density of an object with a mass of 27G and a volume of 9.0 CM cubed

3.0g/cm cubed

How many significant digits are in 0.02063

4

The attractive force between unlike molecules

adhesion

What is measured altitude

altimeter

What is the average speed of a person who walks 28 KM in 7.0 H

4.0km/h

What is the ratio of input distance to output distance

IMA

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

Second law of motion

What is the rate of doing work

power

What is the product of an objects mass and velocity

Momentum

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

centripetal force

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

Archimedes principle

What is the SI unit of pressure

pascal

Who discovered the laws of motion and gravitation

Sir Isaac newton

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

drag

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

lift

what valid form of interference suppose is that when the consequent is false the antecedent must be false

Denying the consequent

What is 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

reproducibility

What is out of gravitational pull on an object

weight

Fallacy occurs when a term is misleadingly used with two different meanings in a single argument

equivocation

Which of the expresses 2702 correctly in scientific notation

2.702 x 10 (3 power)

What is the force exerted per unit of area

pressure

What factor that is changed to test a hypothesis

independent variable

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

Criteria

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

buoyancy

What is a conclusion based on reasoning from evidence

inference

What is the magnitude of the force required to accelerate a 2000 KG truck at 10 MS squared

20,000 (f=ma)

What law states that if the pressure of a gas is constant, it's volume and temperature are directly proportional

Charle's law

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

streamlining

What system of measurement was designed by French scientist to be simpler to learn and use the FPS system

metric system

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

class 3

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

Neutral buoyancy

What is the name for a falling velocity at which the force of air resistance equals the objects weight and stops the object from accelerating

terminal velocity

What scalar quantity Is the distance traveled by an object per unit time.

speed

measure of how quickly an object moves

V=d/t

Newtons second law of motion

F=ma -->

the efficiency of a machine

N=Wo/Wi

the density of an object

P= m/V

The phenomenon of a spinning cylinder or ball causing lift is the what affect

Magnus

The multiplication of the input force that a machine provides under a real world conditions is what

AMA

The term that refers to any change in velocity is

acceleration

A tentative explanation to describe a scientific process is

Hypothesis

amount of matter in an object is

mass

SI unit of work

joule

State of matter in which molecules can move freely and conform to the shape of the container that would mean attracted to each other is what state

liquid

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

compressibility

The phenomenon in which a liquid in a thin tube rises above or false beneath its own level is what

capillarity

Device that uses an airtight metal box with thin flexible walls to measure pressure is what

aneroid barometer

according to Archimedes, an object immersed in water appears to lose its what?

weight

The closeness of a measurement to the quantities actual value is

Accuracy

Charles Law

V1/T1=V2/T2

Pascals' principle

F input/A input = F output/A output

Boyle's law

P1V1=P2V2

Amontons's law

P1/T1=P2/V2

When it's of water spills on a table, why does the water bead and puddle instead of flattening to the smooth service

The water coheres and pulls back from the table

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

The pressure from the gas inside the container

Michael is conducting an experiment to see which toys his cat prefers. He tests three different type of toys in his bedroom: a small foam ball, a plastic mouse, and a feather toy. Each day after school, he takes his cat to his bedroom to test and record results. What are two important controlled variables for his experiment

His bedroom & time of day

On a consistently breezy day, Grace is flying a large foam airplane. A sudden gust of wind pushes the airplane nose up, which causes the airplane to plumb it to the ground. Why would the airplane suddenly fall?

The airplane exceeded it's critical angle of attack and no more lift developed

The small piston of a hydraulic press has an area of 2.0 CM squared, and the large piston has an area of 16 CM squared. Calculate the output force of the large piston it's the small piston has a force of 4.0 and applied to it

F-input/A-input = F-output/A-output/ 4.0/2.0= F-output/ 16 = 32N

sample of gas occupies 4.0 L at a pressure of 102.2 K PA. What is the new volume if the pressure is increased to 116.8 K PA

p1v1=p2v2 (102.2)(4.0) = 3.5L

what is the efficiency of a machine that has a work output of 630J and at work input of 700J

90.0 is 630/700

What is a car's acceleration in the direction of motion when velocity changes from 20.0 to 60.0m/2 in 10s?

4.0ms = 60-20/10