In a metal, each metal atom readily gives up its outer shell electrons, resulting in a sea of free electrons flowing throughout a lattice of positively charged metal ions. A Twig Science Glossary Film. Key scientific terms defined in...

Mass per unit of volume. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key curriculum...

The state of the atmosphere at a specific time and place, including factors such as temperature and pressure, wind speed, and precipitation. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...

Or burning, a chemical reaction that requires an initial source of heat, a fuel, and an oxidising agent such as oxygen, and releases energy as heat, and often light. A Twig Science Glossary Film. Key scientific terms defined in just 60...

A substance that produces inflammation or pain on contact with skin, eyes, the respiratory system or other membranes such as stomach linings. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...

Light is focused on to an object ... what happens next?
<

br/>

Physical processes -Ligh
t

- Reflection />

Learning Points
Focusing light usi
n

g mirrors generates a lot of heat.


A Twig...

What is it? ... It's a radiator!
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Material processes - Changing materials - Expansion
a

nd conduction


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The...

What is it? ... It's a red-hot poker!
<

br/>

Physical processes - Energy and energy transfer -


Heat transfer


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame....

What is it? ... It's rice steaming!
<

br/>

Physical processes - Energy and energy transfer - Heat a
n

d temperature


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full...

Exploring the surface of the Sun.
<

br/>

Our universe - Space adventure - Th
e

Sun and Moon />

Learning Points
The Sun provides the Earth with ene
r

gy in the form of light and heat.
<

br/>...

Find out how the amazing Brunsvigia plant uses the wind to spread its seeds.
<

br/>

Living things - Amazing plants - Pl
a

nt life cycle />

Learning Points
Plants grow from seed, to seedling, to...

Four processes that involve objects changing shape are shown, but which is the odd one out?
<

br/>

Physical processes - Energy and energy transfer - Heat a
n

d temperature


A Twig Tidbit Film - Odd one out....

Did you know that heat and temperature are different things?
<

br/>

Physical processes - Energy and energy transfer - Heat a
n

d temperature />

Learning Points
Tempera
t

ure and heat are different...

True or false ... Geothermal energy is energy found inside the Earth? People and places - Future of energy - Energy sources Learning Points Geothermal energy comes from inside the Earth. A Twig Tidbit Film - True or False? The children...

Exothermic reactions release heat energy. Discover how some reactions release heat slowly and some quickly.
<

br/>

Material processes - Changing materials - More chem
i

cal reactions />

Learning Points...

True or false ... Heat is measured in degrees Celsius?
<

br/>

Physical processes -Energy and energy transfer - Heat a
n

d temperature />

Learning Points
Heat is a form o
f

energy and is measured in...

A Bunsen burner heats up the end of a metal rod ... what happens next?
<

br/>

Physical processes -Energy and energy transfer -


Heat transfer


A Twig Tidbit Film - What happens next? A short section of film...

True or false ... Friction generates heat?
<

br/>

Physical processes -Force and mot
i

on - Friction />

Learning Points r

/> Friction generates heat energy.


A Twig Tidbit Film - True or...

What chemical and physical changes are at play in cake baking.
<

br/>

Material processes - Changing materials - More chem
i

cal reactions />

Learning Points
Chemica
l

changes are usually...

Find out the different ways an asteroid's energy is transformed.
<

br/>

Physical processes - Energy and energy transfer - Energy
t

ransformation />

Learning Points /

> There are many types of...

Find out how diamonds are formed within igneous rock.
<

br/>

Material processes - Classifying mat
e

rials - Rocks />

Learning Points
Diamonds are form
e

d under extreme heat and pressure.
...

Six clips are shown on screen ... can you spot the examples of energy transfer?
<

br/>

Physical processes - Energy and energy transfer - W
h

at is energy? />

Learning Points
Light, heat, electri
c

ity...

Did you know that greenhouse gases in the atmosphere prevent heat from escaping?
<

br/>

People and places - Future of energy - The


energy debate />

Learning Points

C

arbon dioxide is a greenhouse...

Four images associated with burning are shown onscreen, but which is the odd one out and is not needed to start a fire?
<

br/>

Material processes - Changing mater
i

als - Burning />

Learning Points
...