Science review quiz

force

force

A push or pull upon an object resulting from the object's interaction with another object.

Vector Quantity

The Physical quantity that has both directions as well as magnitude

Magnitude

Represents the strength and the Direction of the force exerted.

balanced force

when 2 forces act on an object that is equal in size but are opposite in direction, we say the forces are?

unbalanced Force

when 2 forces are acting on an object and are not equal in size, we say the forces are?

Net Force

overall force acting on an object or a combination of the magnitude and the direction

Aristotle

He made pioneering contributions to all fields of philosophy and science, he invented the field of formal logic, and he identified the various scientific disciplines and explored their relationships to each other. He was also a teacher and founded his own school in Athens, known as the Lyceum.

Galileo Galilei

He used an Archimedean model of floating bodies, and later the balance, argues that there is only one principle of motion—heaviness. Bodies move upward not because they have a natural lightness, he says, but because they are displaced or extruded by other heavier bodies moving downward.

Isaac Newton

is popularly remembered as the man who saw an apple fall from a tree, and was inspired to invent the theory of gravity. If you have grappled with elementary physics then you know that he invented calculus and the three laws of motion upon which all of mechanics is based.

Law of Inertia

An object will not change its motion unless a force acts on it. What law of motion is this? (name of law not number,Add "Law of")

Mass

Less inertia has less?

Friction

Force present on the surface in contact with the object that tends to oppose the force acting on a body

Law of Acceleration

a quantitative description of the changes a force can produce in the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. ( NAME OF LAW NOT NUMBER, ADD" LAW OF")

a= F/m

What is the formula to find Acceleration? (Use parentheses "(a)" for multiplication, And the slash sign "/" for division)

F=(m)(a)

What is the formula to find Force? (Use parentheses "(F)" for multiplication, And the slash sign "/" for division)

m=F/a

What is the formula to find mass? (Use parentheses "(F)" for multiplication, And the slash sign "/" for division)

acceleration

m/s^2 is the unit sign of?

Force

N is the unit sign of?

Mass

Kg/g is the unit of?

Law of Action and Reaction

for every action (force) in nature, there is an equal and opposite reaction ( NAME OF LAW NOT NUMBER, ADD" LAW OF")

Beaker

are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations.

Laboratory Equipment

The type of equipment found in buildings or rooms equipped for conducting scientific research or teaching practical science and for conducting scientific experiments and research.

Bunsen burner

is a type of gas burner commonly used as a heat source in the laboratatory

Burets

are for addition of a precise volume of liquid. The volume of liquid added can be determined to the nearest 0.01 mL with practice.

Clay Triangles

are placed on a ring attached to a ring stand as a support for a funnel, crucible, or evaporating dish.

Droppers and disposable pipets

are for addition of liquids drop by drop.

erlenmeyer flask

are useful to contain reactions or to hold liquid samples. They are also useful to catch filtrates.

Glass Funnel

are for funneling liquids from one container to another or for filtering when equipped with filter paper

graduated cylinder

are for measurement of an amount of liquid.

Ring stand with Rings

are for holding pieces of glassware in place.

Test Tubes

are for holding small samples or for containing small scale reactions.

Test tube holder

are for holding test tubes when tubes should not be touched

Tongs

Similar in function to forceps but are useful for larger items.

Volumetric Flask

Used to measure precise volumes of liquid or to make precise dilutions.

Wash Bottle

Used for dispensing small quantities of distilled water.

Watch glasses

are for holding small samples or for covering beakers or evaporating dishes.

Wire Gauze

on a ring supports beakers to be heated by Bunsen burners

thermometer

is an instrument that measures temperature. It can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air

alcohol lamp

is used for heating, sterilization, and combustion in a laboratory.

microscope

is an instrument that can be used to observe small objects, even cells.

Work

is the product of the force applied and the displacement; it is based also if the object is moving on the direction of the force applied.

W=(F)(m)

What is the formula to find work? (Use parentheses "(a)" for multiplication, And the slash sign "/" for division)

J

What is the unit for work?( letter only)

No work done

If there is no force applied, there will be no movement and direction of the movement, therefore there is?

No work done

If there is a force applied but the object did not move, there will be no direction of the movement, therefore, there is still?

No work Done

If there is a force applied, and the object moved, but the direction of the movement is not the same as the direction of the force applied, there is still?

Work done

If there is a force applied, and the object moved, but in the not exact direction of the force applied, there is?

Work Done

If there is a force applied, and the object moved, and in the exact direction of the force applied, there is?

1J

1,000,000 mJ is how many Joules?(add Unit sign)

J=(1,000,000)(mJ)

What is the formula of mJ to J? (Use parentheses "(a)" for multiplication, And the slash sign "/" for division)

mJ= 1,000,000/J

What is the formula of J to mJ? (Use parentheses "(a)" for multiplication, And the slash sign "/" for division)

James Watt

A Scottish inventor where developed the concept of horsepower. The SI unit of power, watt, was named after him. Watt became interested in the technology of steam engines.

Power

is the rate at which work is done and which energy is transferred

W

WHAT is the unit sign of Power? (Letter only)

Power= Work done/ Time = energy transferred/ time

What is the formula to find power?(Use parentheses "(a)" for multiplication, And the slash sign "/" for division)

W=Fdcos(-)

What is the formula of work at an angle?(Use parentheses "(a)" for multiplication, And the slash sign "/" for division)