P6 Science Revision

Heat

The transfer of thermal energy from a warmer object to a cooler object.

Light travels

in a straight line

Shadow are formed when

light is blocked by an object

Photosynthesis

process by which plants trap light energy to convert water and carbon dioxide into oxygen and sugar

transparent object

allows most/all light to pass through

translucent object

allows some light to pass through

opaque object

does not allow any light to pass through

strength

the ability to withhold weight without breaking

Elasticity

the ability to stretch without breaking

Flexibility

The ability to bend without breaking

waterproof

the ability not to allow water to pass through

Temperature

is a measure of how hot or cold something is

Matter

has mass and takes up space

Solid

has a definite shape and volume

Liquid

has a definite volume but no definite shape

Gas

has no definite shape or volume

A test for magnet is when

an repulsion is observed between the poles of 2 magnets.

Magnets are strongest at

their poles

Pollination

transfer of pollen from anther to stigma

Fertilization

the process of the fusion of a female reproductive cell and male reproductive cell

Germination

the process where seed grows into a seedling when water, oxygen and warmth are present.

Seed Dispersal

is the process where seeds are brought away from the parent plant to reduce competition of water, space, light and mineral salts.

Breathing

the process of taking in air into the body

Respiration is

the process by which oxygen and (digested) food is converted into energy and carbon dioxide and water vapour is given out.

Boiling

The fixed temperature at which a liquid gains heat and changes to a gas

Evaporation

The change of a substance from a liquid gain heat to change to a gas between melting and boiling point.

Freezing

the process by which a liquid lose heat and becomes a solid at a fixed temperature

Melting

the process by which a solid gain heat and become a liquid at a fixed temperature

condensation

the process by which the gas lose heat to a cooler surface and become a liquid.

Force is

a push or a pull

Friction

Is a force that opposes motion between two surfaces that are in contact

chemical potential energy is

a form of stored energy. It can be found in batteries or food or fossil fuel

kinetic energy is

a form of energy of motion

Weight

is a measure of the gravitational force on an object

Mass is

the amount of matter in an object

A thermometer is used to measure

how hot or cold the object is (Temperature of things)

open circuit is

an incomplete circuit through which electricity will not flow

gravitational potential energy

is potential energy related to an object's height

Closed circuit is

a complete circuit through which electricity flows

Good conductor of heat allows

object to gain heat or lose heat from the heat source quickly

Poor conductor of heat allows

object to gain heat or lose heat from the heat source slowly.

Good conductor of electricity allows

electric current to pass through.

An insulator of electricity

does not allow electric current to pass through.

Magnets are made of

iron, nickel, cobalt and steel.

Magnetic object is

something that is attracted to a magnet.

Organism

A living thing

Population

a group of organisms of the same species populating a given area

habitat

Place where an organism lives

Community

Different populations of organisms living in the same region and interacting with each other

chemical potential energy

Energy that is stored in food or batteries

digestive system

Breaks down food into simpler substance

Decomposition

the breaking down of dead organisms and organic waste into simpler substances, known as nutrients

Muscular System

works with the skeletal system to help you move

skeletal system

gives our bodies structure and protects major organs like the heart, lungs, and brain

circulatory system

Transports oxygen, water, digested food from the lungs to the rest of the body and transport carbon dioxide and waste materials away from the body

respiratory system

system responsible for taking in air from the nose and taking in oxygen and releasing carbon dioxide using the lungs

seed dispersal

the movement or transport of seeds away from the parent plant; can be by animals, wind, water or explosive action