Science / Year 7 / Science Understanding / Earth and space sciences

• TLF-IDM015722

Remember the earthquake and following tsunami that hit Japan in March 2011 and damaged a nuclear power plant? Find out about the damage caused, what exploded and why, and the aftermath of the disaster. What debates about nuclear power plants were reignited by the events in Japan?

• TLF-IDM015912

Why did most of the world's oil deposits form at a specific prehistoric time? Learn how overheated super-greenhouse climates caused vast stretches of the world's oceans to stagnate and become depleted of oxygen. Discover the connection between these anoxic events and Earth's oil reserves. Watch scientists investigating ...

• TLF-IDM020960

Could algae be used to create an alternative to crude oil? It's not straightforward - but it is possible. This video describes how algae and waste products from other industries could be used to reduce our reliance on fossil fuels and play a part in controlling climate change.

• TLF-IDM015758

How do we balance protecting the environment and allowing mining-related activities near World Heritage listed areas? In this clip you will see underwater footage of marine life on the Great Barrier Reef and images of liquefied natural gas (LNG) processing and shipping operations on the Queensland coast. Listen to the issues ...

• TLF-IDM015395

Imagine how much your life would change if your water supply ran out. Yet, when it rains, so much water is lost as it runs into stormwater drains. Watch as scientists talk about re-directing stormwater to recharge a groundwater aquifer. Listen as they describe how they can use a natural system to remove contaminants from ...

• TLF-IDM015386

Journey to Bathurst Island where strong tidal currents can be found in the Apsley Strait. Observe how the Nguiu community is investigating the use of tidal power to provide their electricity needs instead of using non-renewable and expensive fossil fuels.

• TLF-IDM015396

Seventy percent of Perth's water comes from underground. Imagine what would happen if that source of water dried up. It's a real possibility if the impact of the climate and human activity is not carefully managed. Watch as scientists show what causes groundwater levels to fall and the effect that has on the Earth's ecosystems. ...

• TLF-IDM015898

Follow geologists as they explore the rocks that lie beneath the Earth's surface. When possible, geologists explore caves in person. Other times they choose to drill or dig. See the devices they use to scan the terrain before they even start drilling or digging.

• TLF-IDL2354

Build up to six energy chains that make electricity. Select from different energy sources and choose energy converters to match. Examine the type of energy change that happens in each converter. Arrange the converters into the correct chain so that the energy can be delivered as electricity. For example, construct a chain ...

• TLF-IDM015661

How might filling your printer with paper be affecting the survival of tigers? Watch this compelling clip to find out about the plight of Sumatran tigers in the wild, and explore the connection between them and paper mills. You will also discover how product labels might not always tell the complete story.