Understanding the Sun

Elvis explains the power of the Sun's energy using a magnifying glass. He describes the Sun as a massive ball of hot gases, highlighting its role as the sole star in our solar system. The Sun's energy is crucial for life on Earth, aiding in plant photosynthesis and providing solar energy for human use. Elvis discusses the Sun's gravity, its composition of hydrogen and helium, and the process of nuclear fusion. He also warns about the dangers of looking directly at the Sun and mentions spacecraft like SOHO that study the Sun.

What tool did Elvis use to concentrate the Sun's rays?

• A piece of glass

• A magnifying glass

• A mirror

• A lens

What is the Sun primarily made of?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

Why is it dangerous to look directly at the Sun?

• It can cause headaches

• It can cause skin burns

• It can make us dizzy

• It can blind us permanently

How did ancient people use the Sun?

• To predict weather

• To communicate with each other

• To locate places and find their way back

• To cook food

What do plants release during the process of making food using the Sun's energy?

• Hydrogen

• Oxygen

• Nitrogen

• Carbon dioxide

What does the word 'Solar' mean?

• Sun

• Star

• Light

• Heat

What is the Sun's gravity compared to Earth's?

• 30 times stronger

• 28 times stronger

• 20 times stronger

• 10 times stronger

What process inside the Sun releases energy?

• Combustion

• Nuclear fusion

• Chemical reaction

• Magnetic field

What is the name of the spacecraft launched to observe the Sun in 1995?

• SOHO

• Voyager

• Galileo

• Hubble

How far is the SOHO spacecraft stationed from Earth?

• 2.5 million km

• 1 million km

• 2 million km

• 1.5 million km