Thermal Expansion of Metals

The video tutorial explores the concept of thermal expansion in solids, specifically using a metal ball and ring. Initially, the metal ball passes through the ring easily. The diameter of the ball is measured using vernier calipers. After heating the ball over a Bunsen burner, it no longer fits through the ring due to thermal expansion, as its diameter increases by 0.03 cm. The video concludes with a final measurement and a brief discussion on the application of thermal expansion.

What is the primary focus of the video tutorial?

• Thermal contraction in solids

• Thermal expansion in gases

• Thermal expansion in solids

• Thermal expansion in liquids

What tool is used to measure the diameter of the metal ball?

• Ruler

• Micrometer

• Tape measure

• Vernier calipers

Why does the metal ball initially pass through the ring?

• The ball is made of a different material

• The ball is larger than the ring

• The ball is smaller than the ring

• The ball and ring are the same size

What happens to the metal ball after heating it over the Bunsen burner?

• It shrinks

• It expands

• It changes color

• It remains the same size

Why does the ball not pass through the ring after heating?

• The chain has shortened

• The ball has expanded

• The ring has expanded

• The ball has melted

By how much does the diameter of the ball increase after heating?

• 0.02 centimeters

• 0.03 centimeters

• 0.01 centimeters

• 0.04 centimeters

What is suggested for further exploration at the end of the video?

• The history of thermal expansion

• The science of Bunsen burners

• Applications of thermal expansion

• Different types of metals