Year 7 End of Year Revision
Terms in this set (157)
The particles are tightly packed.
The particles do not move around, they only vibrate.
The particles are close together with no regular arrangement. Particles move about, and slide past each other.
The particles are far apart from each other. The particles are free to move about in all directions.
Squeezed or pressed together.
The spreading out of particles.
Small intestine, lungs, perfume.
Not Useful Diffusion
The force of air particles hitting a surface.
an empty space with no particles.
Basic unit of matter
A group of atoms bonded together
A substance made of only one kind of atom
A substance made up of atoms of two or more different elements joined by chemical bonds
A combination of two or more substances that are not joined by chemical bonds
A chart of the elements showing the repeating pattern of their properties
Converting waste into reusable material.
Signs of a chemical reaction
a colour change, a gas given off, a solid forming or heat being given off.
The temperature at which a solid becomes a liquid
A material that allows electricity to flow through easily
material that allows heat to transfer easily
Magnesium + Oxygen ->
Sodium + Chlorine ->
Liquid to gas
The temperature at which a liquid changes to a gas
Something that can cause harm
Substances that attack metals, stonework, and skin.
poisonous and can cause death
Dangerous to the environment
Can cause long-term damage to animal and plant life.
able to catch fire easily
less serious hazard e.g. may cause skin irritation.
A chemical that changes color in the presence of an acid or a base
A substance that has a pH of less than 7
A substance that has a pH of more than 7
A substance that has a pH of 7
An indicator with a different colour for each pH value.
a numerical scale showing how acidic or alakline a substance is.
acid + alkali -> salt + water
A starting material in a chemical reaction
Ending materials in a chemical reaction.
Place where an organism lives
A trait that helps an organism survive and reproduce
an organism that is mainly active at night
Daily changes examples
Seasonal changes examples
Hours of daylight
An animal that hunts other animals for food
An organism that is killed and eaten by another organism
An organism that can make its own food.
A chemical intended to kill insects and other organisms that damage crops.
A species in danger of becoming extinct in the near future
Control center of the cell
A cell structure that controls which substances can enter or leave the cell.
where the chemical reactions take place in a cell
provides support to the cell
A sac inside a cell that acts as a storage area containing cell sap
Site of photosynthesis
Green pigment in plants that absorbs light energy used to carry out photosynthesis
Where respiration takes place
A group of similar cells that do the same job.
An instrument that makes small objects look larger
the thing you look at under a microscope
The lens on a light microscope that is closest to the stage.
The part of the microscope you look down.
Supports the slide being viewed
smallest unit of life
Made of a single cell
made of many cells
Covers the specimen on the microscope slide
Wheel on a microscope that moves parts of the microscope to get the image into focus.
group of organs that work together to perform a specific function
Carbon dioxide + water -> glucose + oxygen
underground organs that absorb water and minerals
gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells
Bones of the body
carries electrical messages around the body
Root hair cell
Absorbs water and mineral ions from the soil.
red blood cells
Eye piece lens X Objective lens
A body tissue that contracts or relaxes, making body parts move.
Cells that are adapted to carry out a particular function
Main organs of the respiratory system
a tube that carries air to the lungs
a thin sheet of muscle below the lungs
carry blood away from the heart
carry blood to the heart
A names used to describe energy when it is stored in food, fuels and batteries.
A names used to describe energy when it is stored inside materials.
Any energy resource that will run out.
A energy resource that will NOT run out.
Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
Gravitational potential energy
Potential energy that depends on the height of an object
the potential energy of an object that is stretched or compressed
Law of Conservation of Energy
the law that states that energy cannot be created or destroyed but can be changed from one form to another
energy from the sun that is converted into thermal or electrical energy
Energy derived from the heat in the interior of the earth
a fuel derived directly from living matter.
Power generated from moving water.
The percentage of energy put into a system that does useful work
A fossil fuel that forms underground from partially decomposed plant material
A liquid fossil fuel forms underground from marine organisms.
the energy an object has due to movement.
a change in global or regional climate patterns, attributed largely to the increased levels of carbon dioxide produced by the use of fossil fuels.
a rapid back and forth movement
Lamp (bulb) Symbol
Open switch symbol
The amount of electricity flowing around a circuit.
different parts of a circuit
A circuit in which all parts are connected end to end to provide a single path of current.
A circuit that contains more than one path for current flow.
How much energy is transferred by electricity.
A device used to measure voltage.
A device used to measure current in a circuit
How difficult it is for electricity to flow through something.
A component that makes it difficult for electricity to flow - they are used to reduce the size of the current in a circuit.
A safety device with a thin metal strip that will melt if too much current passes through a circuit
a sudden discharge of electricity through a part of the body.
Contact force examples
Non-contact force examples
Unit of force
the force of gravity on an object
the amount of matter in an object
Mass is measured in
Limit of proportionality
The limit for Hooke's law applied to the extension of a stretched spring
force exerted by a material when it is stretched or compressed
Piece of equipment containing a spring that is used to measure forces
A force that opposes motion between two surfaces that are in contact
Way to reduce friction
the amount of force pushing on a certain area
Formula for pressure
unit of pressure
When two forces acting in opposite directions on an object are the same strength
When two forces acting in opposite directions on an object are NOT the same strength
Voltmeter is connected in
Ammeter is connected in
YOU MIGHT ALSO LIKE...
MCAT Physics | Kaplan Guide
Science Vocabulary Final Exam
Science FINAL RMS Colgan 6th,7th,8th
SCIENCE CAPT Strand 1
OTHER SETS BY THIS CREATOR
unit reivew 1
Food and Nutrition (8A Exploring Science)
IGCSE Coordinated Science Human Influences on Ecosystems
Exploring Science 7F Acids and Alkalis