Science / Year 7 / Science Understanding / Physical sciences

• TLF-IDL51

Investigate the braking efficiency of cars and trucks. Test stopping distances under controlled conditions. Compare effects of vehicle type, tyres, road surface and weather conditions. Choose driving speed, then apply brakes and compare stopping distances. Answer questions about friction, tyres and driver fatigue. This ...

• TLF-IDM016524

Students use this resource consisting of six slides with diagrams, written explanation and voice-over to understand how friction is needed in movement and braking. The fact that friction produces heat and causes wear is also mentioned. There is a two-question quiz and a summary slide.

• TLF-IDL1198

Help warehouse workers lift crates by using a rope and pulleys. Explore relationships between mass, force, distance and work. Notice that pulleys change the direction of a force and make it easier to lift loads. Solve a range of lifting problems by using combinations of worker numbers (force) and pulley numbers. This learning ...

• TLF-IDS8362

This resource, including student videos, provide opportunities for students to identify types of forces, determine whether forces are balanced or unbalanced and compare water and air resistance. They will conduct an investigation into the relationship between friction and different types of surfaces. Students will design, ...

• TLF-IDM016534

Students use this resource consisting of eleven slides with diagrams, written explanation and voice-over to understand how frictional forces, including air resistance, can affect the motion of an object. There is a two-question quiz and a summary slide.

• TLF-IDM015335

A webpage about surfing safety, dangerous waves and rips, and the history and science of surfing. A 'For Kids' section provides games and quizzes for young swimmers and surfers.

• TLF-IDM017940

What part does the force of friction play in our everyday lives? Friction can be an advantage (friend) or a problem (foe). Join interviewer Doug Traction and professors Static, Slide, Rolling and Fluid at the National Tribology Research Centre as they have forceful fun investigating friction. This video won a prize in the ...

• TLF-IDM015554

Peter Rowsthorn visits the Australian International Air Show to answer the question, 'What effect does g-force have on the human body?' Join Pete in the cockpit of a light plane for some aerobatics with pilot David Pilkington. G-force expert Dr David Newman explains the science as Pete endures up to 6 g in the aircraft.

• TLF-IDL479

Investigate the role of physical forces in how bicycle wheels work. Test how wheel size, tyre pressure, tread and load affect rolling resistance. Then choose wheels best suited to track conditions in a time trial. This learning object is one in a series of four objects.

• TLF-IDM018404

How do gears help a cyclist ride up a steep slope? Watch this clip to find out how the force (or effort) required to turn the crank (the gear you turn as you pedal) differs with the use of large and smaller gears. Note that the spring scale in this demonstration measures the amount of force in kilograms not Newtons.