Definitions :/

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Cards (49)

What is diffusion
Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration
what is osmosis
osmosis is the net movement of water molecules from a solution of higher water potential to a solution of lower water potential, through a partially permeable membrane
What is sexual reproduction
sexual reproduction is defined as the fusion of the nuclei of the male and female gametes to form a zygote which develops into genetically unidentical offspring
What is puberty
Puberty is the onset of sexual maturity in the human body. This marks the time when the body becomes biologically capable of reproduction
What is contraception*
Contraception, or birth control, refers to methods that prevent pregnancy by disrupting processes that lead to pregnancy
What is digestion
Digestion is to break down complex nutrient molecules into small, soluble and diffusible molecules for absorption
What is an electric current?
An electric current, I, is the rate of flow of electric charges
What is potential difference?
The potential difference across a component is the amount of work done to drive a unit charge through the component
What is electrical resistance
Electrical resistance of an electrical component is a measure of how much the component opposes the flow of electric current
What is ecology
Ecology is the study of interactions between organisms, and between organisms and their surrounding environment
What is a habitat*
A habitat refers to the place where an organism lives
what is a population*
a population refers to a group of organisms of the same species living in a particular habitat
what is a community*
a community refers to all the populations of various organisms living and interacting with one another in a habitat
what is an ecosystem*
an ecosystem refers to the interactions formed by living organisms in a community and their physical environment
what is parasitism*
Parasitism is a relationship involving one organism gaining benefit, while harming the other organism
what is commensalism*
commensalism involves one species deriving benefit, while the other species is unaffected
what is mutualism*
mutualism is a relationship where both species benefit from one another
what is a food chain*
a food chain is a series of organisms through which energy is transferred in the form of food
what is a tropic level*
a trophic level is the position an organism occupies in a food chain
what is a food web*
a food web consists of multiple interlinked food chains
what is combustion*
combustion is a chemical reaction which a substance is heated in the presence of oxygen gas to form one or more new substances
what is thermal decomposition*
thermal decomposition is a chemical reaction in which a substance, upon heating, breaks down into 2 or more simpler substances
what is oxidation*
oxidation is a chemical process in which a substance gains oxygen
what is neutralisation*
neutralisation is a chemical reaction between an acid and an alkali
what is temperature
temperature is a measure of how hot or cold an object is
what is thermal energy
thermal energy is the energy stored in the body due to its temperature
What is conduction
Conduction is the transfer of thermal energy through a medium without any flow of the medium
what is convection
convection is the transfer of thermal energy by means of convection currents in a fluid, due to a difference in density
what is radiation
radiation is the transfer of thermal energy in the from of electromagnetic waves such as infrared radiation without the aid of a medium
what is a force
a force is a push or pull upon an object resulting from the object’s interaction with another object
what is turning effect
turning effect of a force, or defined as the ability to make something turn
what is pressure
pressure is defined as the force acting per unit area
what is energy
energy is the capacity to do work
what is work done
work done by a constant force on an object is given by the product of the force and the distance moved by the object in the direction of the force
what is gravitational potential energy
gravitational potential energy is defined as the energy which a body possesses because of its position relative to the ground
what is kinetic energy
kinetic energy is defined as the energy possessed by the object due to its motion
what is the principle of conservation of energy*
energy can neither be created or destroyed in any process. it can be converted from one form to another, or transferred from one body to another, but the total amount remains constant
What is kinetic particle theory
The kinetic particle theory states that all matter is made up of tiny particles which are in constant and random motion
what is an atom
atoms are the smallest unit of an element that have all properties of that element
what is proton (atomic) number
proton number of an atom is the number of protons in the atom