Curated Video
Saturn's rings
A series of rings surrounding the planet Saturn. 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...
Curated Video
Changing States of Matter
Water can either be a solid, a liquid or a gas. How does matter change state? Chemistry - Atoms And Bonding - Learning Points. Ice, liquid water and steam all consist of exactly the same molecules. Evaporation occurs when the temperature...
Curated Video
The Taiga Forest
The Taiga forest is the largest land ecosystem on Earth, stretching from Alaska to Japan. Explore the Taiga and discover the plant and animal life that survives these freezing conditions. Biology - Ecosystems - Learning Points. The Taiga...
Curated Video
Ocean Conveyer
A super-current runs from the Arctic past South America to the Indian Ocean. This is major factor influencing our climate, controlling everything from currents to the weather. Earth Science - Human Impacts - Learning Points. The great...
Curated Video
Friction in Curling
Forces play a huge role in the sport of curling. Discover how curlers manipulate friction as they compete. Physics - Forces - Learning Points. Friction plays an important part in sports, including curling. Curlers use the power of...
Curated Video
Water Forces
The unique force created by hydrogen bonding gives water some unique properties, which seem to defy the laws of nature. Chemistry - Atoms And Bonding - Learning Points. Hydrogen bonding is a special force of attraction between water...
Curated Video
Mars: The Search for Water
We know that Mars once had a landscape with oceans and rivers, but what happened to it? Physics - Universe - Learning Points. Although Mars is a freezing dry world today, it is thought the planet was once like Earth. If liquid water once...
Curated Video
Cloud Seeding
Scientists have found a way to make it rain. But weather modification has its critics, and there may be unforeseen consequences surrounding the "cloud seeding" process. Earth Science - Weather - Learning Points. When silver iodide is...
Curated Video
Tundra
Find out what animals and plants do to survive in Earth's coldest biome. Biology - Ecosystems - Learning Points. The tundra is Earth's coldest biome. The Arctic tundra is found near the North Pole. The alpine tundra is found around the...
Curated Video
Oceans: Frozen Seas
At the Earth's poles, wildlife survives both under the sea, and on the icy surface above. Biology - Ecosystems - Learning Points. During the winter, both the Arctic and Southern Oceans are covered in a thick layer of ice. The two frozen...
Curated Video
High- and Medium-Level Clouds
What are the different types of clouds in the upper region of the troposphere? What do they look like and how are they are formed? Earth Science - Weather - Learning Points. High-level clouds are found between the Troposphere and the...
Curated Video
Mars: Under the Ice
Scientists have found microbes frozen deep in the Antarctic ice sheets, in conditions very similar to the red planet's surface. Could life exist on Mars, in suspended animation? Physics - Universe - Learning Points. In 2001, a frozen...
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Weathering: The Erosion of Rock by Natural Forces
The physical, biological or chemical factors that erode rock, from sand to ice, rain to plants, and even footsteps. Earth Science - Geology - Learning Points. "Weathering" refers to the breakdown of rocks into smaller pieces. Physical...
Curated Video
Salt: Salt and Ice
Salt is routinely used to melt snow and ice on winter roads. But what is happening at the molecular level to cause this helpful change of state? Chemistry - Atoms And Bonding - Learning Points. When salt is added to water it lowers the...
Curated Video
Interglacial period
A period of warmer climate in between the glacial periods of an ice age. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Erosion
The wearing away of rock and the removal of weathered rock, soil, and other solid materials away from source. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Melting
Melting is when a solid turns into a liquid. The world around us - Exploring materials - Freezing and melting Learning Points Some places on Earth, such as the Arctic, are so cold that seawater freezes during the cold winter months. When...
Curated Video
Ice festival
Water can exist as solid ice and liquid water. The world around us - Exploring materials - Freezing and melting Learning Points If liquid water cools to below 0°C, it will freeze into solid ice. If solid ice warms to above 0°C, it will...
Curated Video
Solids – Clip
Find out how and why some solid substances are able to flow. Material processes - Solids, liquids and gases - Solids Learning Points An avalanche is a fast moving flow of solid snow and ice. A Twig Tidbit Film - Clip. A short film that...
Curated Video
More chemical reactions – Odd one out
Four objects are shown on screen, but which is the odd one out and is not a product of a chemical reaction? Material processes - Changing materials - More chemical reactions Learning Points Chemical reactions result in the production of...
Curated Video
The wonder of water
We use water every day ... but what do you really know about it? Material processes - Solids, liquids and gases - Characteristics of water Learning Points Water is the only substance on Earth that occurs naturally in all three states....
Curated Video
Snowflakes
How are snowflakes formed in such a dizzying array of patterns? Material processes - Solids, liquids and gases - Characteristics of water Learning Points Liquid water freezes at 0°C. The shape of a snowflake is changed at different...
Curated Video
The Native American Impact on Our Culture
Dr. Forrester asks the question, “How did the Native Americans get to The New World?” She also discusses the Bering Strait Land Bridge Theory. She then gives examples of Native American words still used in our vocabulary today.
Curated Video
Qualities of Solids, Liquids, and Gases
Dr. Forrester explains the three states of matter and the qualities of each.