الحفريات: تصميم نموذج لقالب

The video tutorial guides viewers through designing a mold model using plaster. It begins with an introduction to the activity and lists the necessary materials, including plaster, water, a brush, a plastic container, a metal mold, a wooden stick, and cooking oil. The process involves coating the mold with oil, mixing plaster with water, pouring the mixture into the mold, and allowing it to set for at least a day. Finally, the metal mold is removed to reveal the plaster model, which mirrors the mold's internal surface. The activity demonstrates how a solid plaster model can replicate a metal mold's shape.

What is the first step in creating a mold model?

• Pouring the mixture into the mold

• Oiling the metal mold

• Letting the mixture set

• Mixing plaster with water

Which tool is used to mix plaster with water?

• A metal spoon

• A plastic spatula

• A wooden stick

• A rubber mallet

How long should the mixture be left to set?

• Two days

• At least one day

• A few hours

• One week

What is observed after removing the metal mold?

• The plaster is still wet

• The plaster has a different shape

• The plaster and mold have similar surface details

• The mold is damaged

What conclusion can be drawn from the activity?

• The plaster is not suitable for molding

• The plaster cannot hold any shape

• The plaster forms a solid mold of the metal mold

• The metal mold is unnecessary