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From chewing to pooing. Learn how our bodies get what they need from food. Bitesize 2nd Level Science guide on the digestive system for Scotland's Curriculum for Excellence (CfE).

Learn how the heart pumps blood round the circulatory system to deliver oxygen and nutrients. Bitesize 2nd Level Science guide for Scotland's Curriculum for Excellence (CfE).

Find out about the different ways blood circulates around mammals, fish and insects.

Learn about photosynthesis and respiration, and how plants gain nutrients to grow.

Learn about human lungs, respiration system, breathing in oxygen and breathing out carbon dioxide. Bitesize 2nd Level Science in Scotland's Curriculum for Excellence (CfE).

Learn how a fish, frog and grasshopper breathe in different ways.

Learn how bones and the human skeleton let us move, hold our bodies up and protect our organs. Bitesize 2nd Level Science guide for Scotland's Curriculum for Excellence (CfE).

Sweating, drinking and the kidneys help keep body temperature and water levels balanced.

Find out how animal behaviour helps them maintain their body temperature.

Find out how conformers and regulators maintain their body temperature in different ways.

Find out why children look like their parents and how we inherit traits.

Find out how animals are adapted to their environments with Emmett the explorer.

Find out about evolution and how living things change over time.

Discover how the food gets into the body, through the digestive system.

Find out how the teeth and tongue help break down food before it is swallowed.

Find out the functions of different teeth types including canines, incisors and molars.

Find out about the role that the stomach plays in the digestive system.

Find out about the role of the small and large intestines in the digestive system.

Find out how the circulatory system takes oxygen around the body.

Discover how blood vessels and blood cells help keep your body working.

Inside every person is an amazing network of blood vessels. Find out how they carry blood around the body.

Find out how the heart keeps all the blood in your circulatory system flowing.

Find out how the eyes and brain work together to help people see.

Find out how the ear and brain work together to let people hear.

Find out how your skin and brain work together to help you to feel things like pressure, pain and whether it is hot or cold.

Find out how the human nose detects and identifies different smells.

Find out how taste buds and our sense of smell work together to tell us what we're eating.

Discover how animals can be classified by common features.

Find out how to classify an animal as a vertebrate.

Find out how to classify an animal as an invertebrate.

Find out why the way animals taste is linked to their diet.

Find out how different animals can detect taste with more than just their tongues.

Find out why some animals have sharp pointy teeth and others have smooth flat teeth.

Find out how animals and plants use smell to communicate with ´óÏó´«Ã½ Bitesize.

Learn how different animals, like bears and salmon, smell.

Find out how different animals respond to changes in temperature.

How elephants, fish, crickets and the venus fly trap sense changes in pressure.

Some animal hibernate to protect themselves from harsh winter weather conditions.

Find out how changing seasons and weather conditions cause animals to migrate (move from one place to another).

Find out about the different parts of a plant, including the flower, leaves, stem and roots.

Find out about what a plant needs in order to live and grow.

Find out why flowers need bees to pollinate them and what bees get in return.

Plants have certain requirements that need to be met in order to grow. Find out what these requirements are.

Find out how plants help the environment and benefit society.

Find out how organic and synthetic fertilisers give plants the minerals they need to grow.

Microorganisms are very tiny living things. They are so small that you need a microscope to see them.

Compare how different animals grow and change during their life.

Discover how different animals grow and reproduce throughout their life.

Find out about the different stages of a human life cycle and how we change as we grow up.

Find out how a plant changes through its life and produces offspring.

Find out how flowering plants make seeds.

Find out why plants can be found everywhere from the waterside to hilltops.

Explore the African savannah and find out how the animals and plants are connected in different food chains.

Explore the Arctic tundra and find out how the animals and plants are connected in different food chains.

Explore a British woodland and find out how the animals and plants are connected in different food chains.

Find out how food chains can show the relationship between different animals and plants.

Many plants and animals live together in ecosystems. They rely on one another to survive.

Find out how animals are adapted to their environments with Emmett the explorer.

Learn about the role of the Sun in the Solar System, the different types of planets and the key features of the planets.

The Earth was formed 4.5 billion years ago. Find out about the speed it spins and how it orbits the Sun.

Explore the solar system and learn the order of the planets.

Find out how the Sun is a star that gives out heat and light.

Find out which planets are the rocky planets and how to identify them.

Find out which planets are the gas planets and what makes them different from the rest.

Find out how the sun affects our weather.

Find out how the Equator affects temperature around the world.

Tim Peake and Fran Scott explore the explosive power of rocket fuel and how astronauts get to the International Space Station.

Tim Peake and Fran Scott explore the effect of space on the body.

Tim Peake and Fran Scott explore what sound and light waves tell us about space.

Tim Peake and Fran Scott explore outer space and comets.

Tim Peake and Fran Scott explore how astronauts make the trip from the International Space Station back to Earth.

Select from the list of questions to find out about Tim Peake's mission to the International Space Station.

Find out about changing state from a liquid to a gas by the process of evaporation and condensation.

Find out how water is constantly moving around the environment through the water cycle.

Find out about the journey water makes every day and how it affects the weather.

Find out what electricity is and how appliances can convert electricity into sound, movement, heat and more.

Learn what batteries are, how they work and how to make your own batteries,

Find out about electrical conductors and insulators and which items allow electricity to pass through them.

Learn about circuit symbols for electrical components and how to draw circuit diagrams.

Find out what circuits are and how you can change them by adding in items like switches and batteries.

Find out how to draw a circuit using a circuit diagram, and learn the symbols used to represent each component.

Find out what electrical power is and how to increase it in an electrical circuit.

Using pieces of string to produce sounds with different pitches.

Find out how how forces, like pushes and pulls, move objects.

Find out about how friction acts against movement and how this can be useful.

Find out about friction, a force between two surfaces that are sliding across each other.

Find out how air resistance affects falling objects and how water resistance affects the speed of things travelling in water.

Find out about how gravity, magnetism and electrostatic forces can affect objects over a distance.

What does gravity do? Who was Sir Isaac Newton? How is gravity different on the moon?

Learn about the north and south poles of magnets and how we use magnets in everyday life.

Learn more about magnets and which metals are attracted to them.

Find out how buoyancy keeps objects afloat and try out a buoyancy experiment.

Find out why some objects float and others sink in this introduction to buoyancy.

Learn how sound travels through solids, liquids and gases and how people and animals use sound to communicate.

Sounds are made when objects vibrate. The vibrations enter your ear and you hear them as sound. Find out more about how sound travels.

Sound waves make the eardrum vibrate and then send messages to the brain. Find out more about how the ear detects sounds.

A drum with a tight skin makes a high pitched wave. Find out more about sound waves and pitch.

Sounds are vibrations that travel through the air. A weak vibration doesn't travel very far. Discover more about volume.

Learn how light travels and how we see different colours.

Light comes from different sources, like lamps, bulbs and the sun. Find out more about how light travels.

When light hits an object it is reflected (bounces back) and enters our eyes. Find out about different reflective surfaces and how we see things.

Light bounces off some surfaces. But light travels right into your eye. Explore how your eye detects light.

Find out why we don't have chocolate mugs and woollen umbrellas by learning about the uses of different materials.

Find out how dissolving works and why some substances appear to disappear when you mix them with water.

Find out about the different methods of separation and how to use them to reverse a mixture.

Find out how to tell the difference between reversible and irreversible reactions.

Find out about the difference between solids, liquids and gases.

Discover how water turns into ice and back again to water, through the processes of freezing and melting.

Find out about the main components of soil and how these affect its properties.

Find out how igneous, metamorphic and sedimentary rocks are formed.

Join the Junkateers on their mission to tidy up the planet. Work scientifically by sorting through scrap and running experiments to identify materials for recycling.

Learn about how we use and waste energy in our daily lives and the impact this has on the environment.

Find out about the ways in which we can make a positive impact on our local and global environments.

Find out what sustainability means, why it matters and how to make sustainable choices.

Find out why some forms of transport damage the environment, what we can do to make a positive change and what the benefits and challenges ahead are.

Learn about the impact of food choices on the environment and how eating local, seasonal food, reducing food waste and composting can help sustainable living.

Learn about the impact of our water use on the environment and how we can use it more sustainably.

Find out about what plastic is, the impact it has on the environment, and how we can reduce, reuse and recycle plastic to live more sustainably.

Learn about metals, how they are produced and why we use them. Find out how they affect the environment, and how we can reduce, reuse and recycle metals to live more sustainably.

Find out why wood is used, why trees are important, what deforestation is and how we can make more sustainable choices.

Learn about glass, how it is produced and why we use it. Find out how it affects the environment, and how we can reduce, reuse and recycle glass to live more sustainably.

Find out about textiles, their impact on the environment and what we can do to make a positive change.

Find out where energy comes from and what the main types of energy are.

Discover the differences between renewable and non-renewable energy.

Find out how power stations generate electricity from different energy sources, and how the electricity we use every day gets to our homes.

Learn how batteries store energy and how they can help make our energy use more sustainable.

Learn how biomass can be used as a renewable energy source and find out about its advantages and disadvantages.

Learn how we use fossil fuels and why burning them causes climate change.

Learn how geothermal energy from underground can be used as renewable energy and find out about its advantages and disadvantages.

Learn how hydroelectric dams generate renewable energy and find out about their advantages and disadvantages.

Learn how nuclear energy can be used to generate electricity and find out about its advantages and disadvantages.

Learn how solar energy is used to generate renewable energy and its advantages and disadvantages.

Find out what causes tides and how their renewable energy can be used to generate electricity.

Learn how wave energy is being developed to generate renewable electricity and find out about its advantages and disadvantages.

Learn how wind turbines generate renewable energy and find out about their advantages and disadvantages.

Learn about some of the new developments in renewable energy and how these might help reduce climate change.

Waste is rubbish that is thrown in the bin or recycled. What else can you do with waste?

Discover how humans have a positive and negative impact on the environment.