Primary 2 General Studies

A new tooth that grows after the baby tooth falls out; it never grows back if lost.

The first set of teeth in children, later replaced by permanent teeth.

Germs turn food bits into acid and make holes in the teeth.

A sour substance that eats away the surface of teeth.

A doctor who checks and treats teeth.

Water that is neither hot nor cold, good for bathing and brushing.

The narrow spaces between teeth where bits of food hide.

An unpleasant smell, such as from an unclean body.

Seeing a doctor or dentist regularly to check the body.

The parts of food that help the body grow and work.

Eating suitable amounts from every food group.

Staples such as rice, noodles and bread that give us energy.

The nutrient that helps the body grow and repair itself.

The nutrient that makes bones and teeth strong.

Nutrients in fruit and vegetables that help the body fight illness.

The part of plants and grains that helps digestion.

A chart that sorts food into layers: eat most from the bottom layer and least from the top.

A professional who studies food and advises people on what to eat.

The lights that control cars and pedestrians at crossings.

The white stripes painted on the road for pedestrians to cross.

A bridge over the road for people to cross safely.

A passage under the road for people to walk through.

The signal that means stop.

The signal that means go.

The person who drives a vehicle.

The rule that vehicles travel on the left side of the road.

A vivid colour that is easy to see.

Stopping activity so the body and brain recover.

The time when the body and brain rest, so we feel fresh by day.

A plan that lists what to do at each time of the day.

Giving full attention to one thing.

Activities such as running and rope skipping that train the body.

Time spent watching TV, phones or tablets.

Doing almost the same things at almost the same times every day.

A short sleep at midday.

Reaching and bending to relax the arms, legs and back.

A person living near your home.

An old person who lives alone and especially needs care.

An item wrapped up to be sent or carried.

A place that holds activities and services for local people.

An event where people gather to enjoy and celebrate together.

To speak in a friendly way when meeting, such as saying good morning.

Treated the same way between people, such as helping each other.

A respectful manner, such as often saying please, thank you and sorry.

A feeling of kindness and comfort.

Useful things such as water, electricity and paper.

The switch that controls the flow of water.

The factory that produces electricity.

The machine that cools a room.

The unit for measuring temperature, such as twenty-five degrees.

The part that connects an appliance to the socket for power.

Washing the body standing under water, using less than a bath.

To use carefully and not waste.

The electricity an appliance still uses when switched off but left plugged in.

A warm climate zone slightly cooler than the tropics; Hong Kong lies in it.

With much moisture in the air, so things go mouldy easily.

The damp spring days in Hong Kong when walls sweat and clothes will not dry.

A tropical storm bringing fierce wind and heavy rain.

How much moisture the air holds, shown as a percentage.

A short heavy rain with thunder.

With little moisture in the air, so skin feels tight.

A machine that takes moisture out of the air to dry a room.

Information telling the coming weather, such as temperature and rain.

The natural place where an animal lives and finds food.

The home birds build from twigs and grass for laying eggs and raising chicks.

The bees' home and honey store, made of many six-sided cells.

The tunnels and chambers ants dig underground.

The hole animals such as rabbits dig in the soil.

A hollow in a trunk where animals such as squirrels live.

Concealed so it is hard to find.

The place where people or animals live their lives.

Cutting trees down, which destroys animals' habitats.

The grain a plant uses to reproduce, holding a baby plant and food.

When a seed starts to grow and puts out root and shoot.

The outer skin covering a seed and protecting the baby plant inside.

A young plant that has just sprouted.

The process by which leaves use sunlight to make food.

The part a plant forms after flowering, containing seeds.

The nourishment in soil that plants use to grow.

The part of a plant that grows down and takes in water and nutrients.

How hot or cold something is; seeds need a suitable temperature to sprout.

Something that attracts objects made of iron.

The invisible power by which a magnet attracts or pushes objects.

The two strongest ends of a magnet, north and south.

The end of a magnet that points north, often marked red.

The end of a magnet that points south, often marked blue.

To pull another object towards itself.

To push another object away.

A wire clip for papers that a magnet can attract.

A magnet in the shape of a bar, with a pole at each end.

Something that gives out its own light, such as the sun and lamps.

A path with no bends; light travels in straight lines.

Letting no light through, such as a book.

Letting some light through, such as waxed paper.

Letting nearly all light through, such as glass.

The dark area formed behind an object that blocks the light.

An ancient tool that tells time by the changing position of a shadow.

A small handheld light.

Where something is; move the light and the shadow follows.

The three forms of matter: solid, liquid and gas.

The form with a fixed shape, such as ice.

The flowing form without a fixed shape, such as water.

The form spread through the air, such as water vapour.

Vapour turning into tiny drops when cooled.

Water turning into vapour and spreading into the air when heated.

The bubbling of water at about one hundred degrees Celsius as it turns to vapour.

A solid taking in heat and becoming liquid, such as ice to water.

Water in its gaseous state — invisible and spread through the air.

Public places serving residents, such as libraries and parks.

A place that keeps books for people to borrow and read.

A garden for rest, exercise and play.

The office that handles letters and parcels.

Where firefighters stay and fire engines are kept.

Where police work to keep the peace.

Where doctors see and treat patients.

The hours when a facility is open for use.

Things belonging to everyone, such as park benches.

Transport shared by everyone, such as the MTR and buses.

Hong Kong's railway system, which runs fast.

A large vehicle running on fixed routes.

A boat carrying people across the harbour.

A card used to pay fares and make small purchases.

The area in a station where passengers wait and board.

To offer your seat to someone who needs it more.

The bar in a carriage to hold for balance.

The rule of letting passengers off before others board.

The work a person regularly does.

A worker who puts out fires and rescues trapped people.

A worker who cares for patients and assists doctors.

A worker who cooks food in a kitchen.

A worker who delivers letters and parcels.

A worker who builds buildings and roads.

The set clothing worn by people in the same trade.

Equipment that helps get work done, such as ladders and stethoscopes.

Something useful done for society or others.

A person who helps others willingly without pay.

A place offering activities and care for old people.

Selling small flags on the street to raise money for charities.

To give goods or money to people or organisations in need.

An organisation that helps people in need.

A wheeled chair for people who cannot walk easily.

To notice and look after others' needs.

Living by oneself without family at home.

A heart that cares for others.

The meaning or wish hidden behind a name or shape.

The food specially eaten at a certain festival.

The cake eaten at Lunar New Year, meaning rising higher each year.

Round glutinous rice balls symbolising reunion.

Glutinous rice and fillings wrapped in leaves, eaten at the Dragon Boat Festival.

The patriotic poet of the Warring States era, remembered at the Dragon Boat Festival.

The round cake eaten at Mid-Autumn, meaning people and moon reunited.

Family gathering together, whole and complete.

Words that sound the same or similar, such as cake and high in Chinese.

A fixed phrase, usually of four characters, whose meaning is complete.

To hope for reward by luck instead of working for it.

To rush for results and spoil the matter instead.

A person of narrow experience and horizons.

With resolve and persistence, even the hardest task can be done.

Hoping to succeed by accidental good luck.

The spirit of persisting to the end despite difficulty.

The range of one's experience; see and learn more, and it widens.

The lesson a story means to teach.

The part of China other than Hong Kong and Macao.

Connecting next to each other, as Hong Kong adjoins Shenzhen.

Trains that run at very high speed.

The great bridge across the sea linking Hong Kong, Zhuhai and Macao.

The water supplied to Hong Kong from the Dongjiang River on the Mainland.

To travel to where relatives live in order to see them.

Coming from the same root.

To provide goods for use, such as supplying electricity.

One's own country, where one's forebears lived.

The part that stores electrical energy and powers a circuit.

The metal line that carries current, covered with insulation.

The glass bulb that glows when current passes through.

The electricity flowing along wires.

A complete circuit in which current can flow round the ring.

A circuit broken anywhere so the current stops.

The part that closes or opens a circuit.

The end of a battery marked with a plus sign.

The end of a battery marked with a minus sign.

What a thing is used for.

A long hidden magnet that holds iron, set into an edge.

A tool with a magnetic needle for finding direction.

A small needle that swings freely with one end always pointing north.

A train lifted by magnetic force above the track, running at high speed.

To float in the air without touching the ground.

China's four great ancient inventions: paper, printing, gunpowder and the compass.

The device containing a magnet that turns signals into sound.

The distance travelled in one hour, such as three hundred kilometres per hour.

The ancient tower where fires were lit to send military news fast.

The ancient stop where messengers changed horses and rested.

Words written on paper and sent for another to read.

Communication using long and short signals for words.

The tool that carries voices directly.

A phone carried about, for calls anytime, anywhere.

A call in which you hear and see the other person.

A mark or wave that carries a message, such as beacon fires or radio waves.

Changing and developing step by step.

Collecting waste and processing it for use again.

The three coloured bins for waste paper, metal and plastic.

New products made by processing waste.

The mush ground from waste paper for making new paper.

Leftover vegetable leaves, fruit skins and the like from the kitchen.

The fertiliser made from food waste as it breaks down.

Energy from sunlight that can become electricity.

The large site where rubbish is buried.

Energy that gives off no waste gases in use, such as solar and wind power.

The flag that represents a country.

To stand for an idea by means of a thing.

The name of China's flag: five yellow stars on a red field.

A flag of three colours, such as France's.

The leaf of the maple tree, the emblem on Canada's flag.

The round interlocking pattern, in red and blue on South Korea's flag.

The ceremony of raising the flag up the pole.

To stand with respect and solemnity.

The song that represents a country.

The system linking computers all over the world.

One's own matters that one does not want others to know.

Information about yourself, such as your name, address and photos.

The secret string that opens your account, to be kept safe.

A person who uses the internet.

Words written below a page or video.

Online material that frightens, disgusts or saddens people.

Something agreed with others and kept together.

What opens a door; a password is like the key to your online door.

A paid message promoting goods to attract buyers.

Shops and companies that sell goods or services.

To spread the word about something to the public.

To have a famous person introduce and recommend a product.

To describe facts as bigger or better than they really are.

The opinions written by people who have used a product.

A sudden wish without careful thought.

The ability to tell right from wrong and true from false.

The channels that spread news, such as newspapers, television and websites.