Exploring Surface Tension in Microgravity

NASA astronaut Ricky Arnold introduces the International Space Station and discusses Earth's water, highlighting its unique properties and the concept of surface tension. The video explains how water's high surface tension, due to its polar nature, allows phenomena like water striders walking on water. In the microgravity environment of the ISS, surface tension is demonstrated effectively. The video concludes with an invitation to explore more about water's properties through activities on the STEMonstrations website.

What is the primary reason Earth should be called 'Planet Ocean'?

• It has a lot of forests.

• It has a lot of deserts.

• It has a lot of mountains.

• It is mostly covered in water.

In how many phases does water occur on Earth?

• Four

• Three

• Two

• One

What is surface tension?

• A property of solids

• A property of gases

• A property of plasma

• A property of liquids

Why does water have a high surface tension compared to other liquids?

• Because it is a solid

• Because of its polar property

• Because of its non-polar property

• Because it is a gas

What creates a strong bond in water molecules?

• The positive hydrogen ends and the positive oxygen ends

• The neutral hydrogen ends and the neutral oxygen ends

• The positive hydrogen ends and the negative oxygen ends

• The positive oxygen ends and the negative hydrogen ends

What happens to the surface molecules of water?

• They are pulled up

• They are pulled sideways

• They are pulled down

• They are pulled in all directions

Why can certain animals like the water strider walk on water?

• Because they can fly

• Because they are very light

• Because of surface tension

• Because they have special feet

What environment makes it easy to show how well water uses surface tension to stick together?

• Low gravity

• No gravity

• High gravity

• Microgravity

What do astronauts rely on to help wash their hair in space?

• Air pressure

• Magnetism

• Surface tension

• Gravity

Where can you find activities related to the video?

• The Astronauts' blog

• The International Space Station website

• NASA's main website

• The STEMonstrations website