# Science Finals (2nd Semester)

## 117 terms

### watt

resentment of how fast work is done

### volt

amount electric push

### ampere

n. The practical unit of electric-current strength.

### Resister

An electrical device that slows the flow of charge in a circuit

### Insulator

a machine that changes motion in to electricity

### Generator

A machine that converts mechanical energy into electrical energy

### Electrolyte

A substance that dissolves in water to give a solution that conducts electric current

### Conductor

A material that easily allows the flow of electricity

### Series Circuit

A circuit in which the objects are connected in a single path

### Parallel Circuit

Circuit in which electric current can follow more than one path

### Magnet

Any material that attracts iron and materials that contain iron

### Integrated Circuit

very small circut

### Circuit

elictricity can flow

### Static Electricity

The build up of electric charges on an object

### Battery

more than one electric cells

### Electromagnet

Temporary magnet made by passing an electric current through a wire coiled around an iron bar

### Electronic Device

A piece of medical equipment that delivers intravenous fluids at a prescribed rate through an intravenous catheter

### Energy

The ability to do work

### Mass

The amount of matter in an object

### Mechanical Energy

The total energy of motion and position of an object or ability

### Motion

An object's change in position relative to a reference point

### Reference Point

fixed un moving object to tell , A place or object used for comparison to determine if an object is in motion

### Acceleration

speeds up or stops

A push or a pull

### Friction

The force that opposes the motion of one surface as it moves across another surface

### Inertia

The tendency of an object to resist any change in its motion

### Velocity

the distance the object moved in a certain direction

### Momentum

mass and velocity

### Fulcrum

The fixed point around which a lever pivots

### Inclined Plane

A flat surface that is slanted

### Screw

An inclined plane wrapped around a cylinder

### Lever

A rigid bar that move around a fixed point

### Wheel & Axel

wheel and a rod running through it

### Joule

A unit of workwheel and a rod running through it

### Compound Machine

A device that combines two or more simple machines

### Machine

A device that makes doing work easier

Hard work

### Resistance Force

Force applied by the machine to overcome resistance

Energy of motion

Energy stored

### Sir Isaac Newton

formulated the laws of motion

### The Laws of Motion

1. Law of inertia - a object at rest will stay that way unless an outside force acts on it 2. Second Law - a net force of an object causes it to accelerate in the direction of the force 2. third law of motion for ever action for there is an equal and opposite reaction

### astroid

irregular pieces of rock metal or dust and is sometimes called planets

### refracting telescope

telescope that uses

### reflecting telescope

telescope that uses lenses and mirrors to make objects appear larger

### constellation

group of stars that appear to form pictures and make stars easier to find

### black hole

super giants star runs out of fuel the cor collapses

hottest stars

### pulsars

neutron star that spins rapidly on its axis

### nova

star that suddenly flares and becomes hundreds of thousands of times brighter than normal

### supergiants

star that is hundreds of times larger than the sun and thousand of times brighter

### magnitude

brightness of a star

### sun

closest start to earth

### red stars

the coldest stars

### stars

a glowing ball of gases

### multiple star groups

star group of three or four stars

### galaxy

huge star system that contains millions of stars and covers many light years of space

### comet

icy chunk of frozen gases, water, and dust that orbits the sun

group of 2 stars

### apparent magnitude

star appears to be

### light year

distance that light travels in one year

### astrology

belief that the star is life

### aurora

light show near earth poles that is caused by solar solar wind

### neil armstrong

first man to walk on the moon

### probe

unmanned spacecraft for research

### satellites

object that rotates around another body in space

### Mercury

closest planet to the sun

### venus

the brightest object morning eving sky

home sweet home

the red planet

### jupiter

largest planet with a great spot

ringed planet

### uranus

the planet thsat rotates sideways

blue planet

smallest planet

### chromosphere

atmosphere of the sun

### corona

outermost part of the sun

### photosphere

surface of the sun

### sunspots

dark spot on the surface of the sun

### rotation

turn of the planet one time

### revolution

planet to turn the one time

### equinox

the equal length of day and night

### rotation

turn of a planet around its axis

### revolution

orbit around a point

fertilized egg

### spores

one cell reproduction system that does store food for the new plant

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### stamen

male part of the flower a thick stalk with a knoblike structure

### pistil

female part of the flower located in the center of the flower

### sepals

flower part that protects a developing flower bud until its ready to open

### style

long slender stalk that connects the ovary to the top of the pistil

### angiosperms

vascular plant that has flowers and protect its seeds inside a fruit

### gymnosperms

vascular plant that does not have flowers and that usually produces its seeds inside a cone, with only the seed coat for a protective coating

### fruit

part of the plant that contains the seed

### marsupial animals

mammal that has a pouch where the young finish developing

### placental animals

mammal whose young develop inside the mother's body

### gestation

time between the fertilization and birth of an animal or human

### asexual reproduction

process of reproducing from only one parrent

### DNA

chemical code held by chromosomes that tells the cells what to do

### genes

small piece of DNA

### heredity

passing of traits from parrents to offspring

### traits

inherited physical characteristics

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### purebred

organism that is the offspring of parrents having the same genetic makeup

### hybrid

plant produced by crossing parent plants that have 2 different forms of the same gene

### recessive traits

gene that is hidden when a dominant gene is present

### co-dominant traits

expression of both genes instead of one being recessive while the other one is recessivr

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### phenotype

physical appearance of an organism

### genotype

genetic makeup of an organism

### pedigree

chart that traces a particular trait through many generations

### punnet squares

diagram used to show the probability of certain genetic traits for the offspring of any 2 parents

### genetic energy

changing a gene or moving some of one organisms genes into another organism

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