Search results

Listed under:  Science  >  Forces and energy  >  Mechanical energy  >  Motion  >  Rotational motion  >  Orbits  >  Axial tilt
Video

Catalyst: Why do astronauts float in space?

Have you wondered what it would be like to be an astronaut floating around in the International Space Station? In this clip, Catalyst's Dr Derek Muller investigates what causes this weightlessness in space. Derek challenges some people visiting the Powerhouse Museum in Sydney to explain why they think astronauts float. ...

Video

Catalyst: Scaling down our solar system

Can you imagine how huge the Sun is, or how far away planets such as Saturn are? Watch this clip to discover how 'mind-bending-ly big' the solar system is. Presenter, Bernie Hobbs, scales down the the solar system to fit into a football field to demonstrate the relative sizes and distances of the Sun and planets. Find out ...

Video

BTN: The Moon landing

Some say landing on the moon is as one of humanity's greatest achievements. Learn about the history of the moon landing and some of the challenges faced by scientists. See actual footage of the astronauts on the moon as part of the Apollo 11 mission.

Video

ABC News Dr Karl discusses the Earths heat video

Discover the activities deep within the Earth that could seriously impact life on Earth far into the future. Watch this video to find out about the sources of the Earth's own heat. Dr Karl explains clearly just what is below the Earth's surface and what is happening there. As well, he talks about changes in the Sun and ...

Video

BTN: Living on the International Space Station

What would it be like to live on a space station? In this clip you'll see footage of astronauts on the International Space Station and discover what their daily life is like. You'll also find out about how the space station was built and about some important research being done there.

Interactive

Earth rotation: night and day

Watch an animation of the Earth rotating in space showing day and night, the equinox where locations on Earth experience close to equal hours of daytime and night-time (12 hours) and views of the Earth from above the North and South Poles. Turn an animated model of the Earth to explore how rotation is related to night and ...

Interactive

Pushing and pulling

Move animals from a boat to their new home in a zoo. Put them on a cart, then use monkeys to push or pull them up a hill. Use the minimum amount of force needed to move each animal. For example, use a single monkey to push a pelican or use three monkeys to pull a zebra. This learning object is a combination of three objects ...

Interactive

Light and shadows

Look at how a tree makes a shadow during a sunny day. Notice that objects always casts shadows that face away from the Sun. Examine how the shape and position of a shadow is related to the time of day and position of the Sun. Explore the shadows cast by different objects such as a bike, an umbrella and a child. Position ...