Heat energy

The video tutorial explains the process of shaping metal in a foundry. It describes how metal is melted into a liquid state by transferring heat energy from a hot fire to the cooler metal, causing the metal molecules to vibrate faster. As the metal heats up, it becomes bendy and eventually melts, allowing it to be poured into moulds. Once in the mould, the metal cools, transferring energy to the surrounding air, and solidifies into the shape of the mould. This process demonstrates how heat energy can change the shape of metal.

What is the primary purpose of a foundry?

• To melt metal into liquid for shaping

• To cool down metals

• To store metal ores

• To paint metal objects

How does heat energy affect metal molecules?

• It makes them disappear

• It changes their color

• It causes them to vibrate faster

• It makes them freeze

What happens to metal when it receives enough heat energy?

• It turns into powder

• It becomes colder

• It changes from liquid to gas

• It becomes bendy and then melts

What is the final step in shaping metal in a foundry?

• Painting the metal

• Heating the metal again

• Breaking the mold

• Pouring molten metal into molds and cooling

What happens to the energy of the metal as it cools?

• It increases

• It disappears

• It remains the same

• It flows to the surrounding air