Helium: Properties, Sources, and Uses

Helium is a colorless, odorless, and tasteless gas, represented by the symbol He. It is the second most abundant element in the universe but is rare on Earth, primarily sourced from natural gas deposits near uranium ores. Helium is used in balloons and blimps due to its lighter-than-air properties and plays a crucial role in cooling superconducting magnets in MRI scanners. However, helium supplies are limited, and future scarcity could impact its availability for various applications.

What is the symbol for helium?

• H

• He

• Hi

• Hm

Why is helium rare in Earth's atmosphere?

• It is too light and floats away

• It is absorbed by the soil

• It reacts with other elements

• It is consumed by plants

Where does most of the helium on Earth come from?

• Ocean water

• Natural gas deposits

• The atmosphere

• Volcanic eruptions

What is required for natural gas deposits to contain helium?

• High pressure

• Presence of uranium ore

• Deep underground location

• Proximity to water

How much helium can a normal balloon with a 1T diameter contain?

• 16 liters

• 14 liters

• 12 liters

• 10 liters

What is the lifting capacity of a helium balloon filled with 14 liters of helium?

• 16 grams

• 10 grams

• 12 grams

• 14 grams

What is one of the major uses of helium in the medical field?

• Inflating surgical balloons

• Powering medical lasers

• Cooling superconducting magnets in MRI scanners

• Sterilizing equipment

What percentage of the world's helium production is used for cryogenics?

• 10%

• 25%

• 20%

• 30%

What could happen if helium supplies become strained in the future?

• Helium balloons and blimps could disappear

• Helium will be replaced by hydrogen

• Helium will become cheaper

• Helium will be used more in industry