ks3 science

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a pH of greater than 7 are commonly called...
Alkali
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a pH of less than 7 are commonly called...
Acid
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Puberty
The process when children undergo physical and emotional changes involving hormones
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Circulatory System
System of organs which transports oxygen and nutrients around the body
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Corrosive
Substances that attack metals, stonework and skin
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Embryo
Unborn offspring in the process of development
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What tubes carry eggs from the ovaries to the uterus and provide the place where fertilisation occurs? Another name for Oviduct?
Fallopian Tube
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Fertilisation
The process which occurs when a male gamete and female gamete fuse to form a zygote
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What is the name of the paper which is used to remove pieces if solid from a liquid?
filter
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What is the name of the unborn offspring that has developed a full set of organs?
Foetus
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What is the name given to the sperm and egg cells involved in sexual reproduction?
Gamete
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Which chemical made in the stomach helps break down food and is often called stomach acid?
Hydrochloric Acid
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What is a name given to a material which does not allow something to flow through it e.g. electricity?
An insulator
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A substance that causes skin and eyes to be sore or to sting can be called an ______________
An irritant
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What is the name given to the type of energy that is stored in moving things?
Kinetic energy
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What is the name of the instrument that makes small objects look larger?
Microscope
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What 'M' is a substance consisting of two or more substances mixed together, not chemically bonded?
Mixture
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What is the name of the process which occurs when an acid reacts with an alkali (or base) to produce salt and water?
Neutralisation
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What is the name of a circuit with branches that split apart and join up again?
A parallel circuit
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What is the name of the mass of tissue that is attached to the wall of the uterus and transfers oxygen and food from the mother's blood to the foetus and waste materials from the foetus back to the mother's blood?
Placenta
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What is the name of a substance or molecule that participates in a chemical reaction?
Reactant
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Respiratory System
A group of organs including Lungs - trachea - mouth and nose
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Menstrual cycle
A 28 day cycle which involves the period and the releasing of an egg
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joules
The unit to measure energy in food
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Photosynthesis equation
Water + carbon dioxide -> glucose+oxygen
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Test for carbon dioxide
Limewater turns cloudy
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Test for hydrogen
Squeaky pop test
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Test for oxygen
relights a glowing split
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aerobic respiration equation
glucose+oxygen¬carbon dioxide+ water
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Products of metal + acid
Salt + hydrogen
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Pollination
Transfer of pollen from one anther to another flowers stigma.
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Cell
The basic building blocks of all animals and plants.
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Nucleus
Contains genetic material, which controls the activities of the cell
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Cytoplasm
Most chemical processes take place here, controlled by enzymes.
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Cell membrane
Controls the movement of substances into and out of the cell.
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Vacuole
Filled with cell sap to help keep the cell turgid. Only in a plant cell.
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Chloroplasts
Contain chlorophyll, which absorbs light energy for photosynthesis. Only in a plant cell.
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Palisade cell
Absorbs light energy for photosynthesis.
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Root hair cell
Absorbs water and mineral ions from the soil.
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Red blood cell
Contain haemoglobin to carry oxygen to the cells. It has no nucleus.
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Tissue
Made from a group of cells with a similar structure and function, which all work together to do a particular job.
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Organ
Made from a group of different tissues, which all work together to do a particular job.
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Organ system
Made from a group of different organs, which all work together to do a particular job.
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Air resistance
The force on an object moving through the air that causes it to slow down (also known as drag)
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Balanced
Forces acting on an object that are the same size but act in opposite directions.
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Compress
To squash into a smaller space
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Deform
To change shape
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Drag force
The force acting on an object moving through air or water that causes it to slow down
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Friction
A force that resists movement because of contact between surfaces
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Newton
The unit of force, symbol N
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Mass
The amount of matter (stuff) a thing is made up of.
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Gravity
A non-contact force that acts between two masses
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Upthrust
The force on an object in a liquid or gas that pushes up
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Pascal (Pa)
A unit of pressure. Other units include N/m2 and N/cm2.
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equation for pressure
pressure=force/area
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Distance-Time Graph
A graph with distance plotted on the y-axis and time plotted on the x-axis.
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equation for moment
moment=force*distance away from the pivot
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Absorption
When energy is transferred from sound (or other waves) to a material
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Amplify
To increase the amplitude of a sound so that it sounds louder.
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Amplitude
The maximum amount of vibration, as measured from the middle position of the wave. Usually measured in metres.
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Angle of incidence
Between the normal and incident ray.
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Other cards in this set

Card 2

Front

a pH of less than 7 are commonly called...

Back

Acid

Card 3

Front

Puberty

Back

Preview of the front of card 3

Card 4

Front

Circulatory System

Back

Preview of the front of card 4

Card 5

Front

Corrosive

Back

Preview of the front of card 5
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