Fossils: Mold Fossil Model

The video tutorial demonstrates how to create a mold using plaster of Paris. It begins with gathering necessary materials, including a metal mold and food oil. The process involves painting the mold with oil, mixing plaster of Paris with water, and pouring it into the mold. After allowing it to solidify for a day, the mold is removed to reveal a detailed replica of the metal mold. The experiment illustrates how plaster of Paris can capture intricate details of a mold's surface.

Which of the following is NOT a material needed for the experiment?

• Plaster of Paris

• Metal mold

• Plastic container

• Glass jar

What is the first step in preparing the metal mold?

• Painting the internal surface with oil

• Pouring the mixture into the mold

• Mixing plaster of Paris with water

• Setting the mold aside to solidify

What tool is used to mix plaster of Paris with water?

• Wooden rod

• Metal rod

• Brush

• Plastic spoon

How long should the mixture be left to solidify?

• A few hours

• One week

• At least one day

• Two days

What conclusion can be drawn from the experiment?

• The solidified plaster forms a mold identical to the metal mold.

• The metal mold is damaged during the process.

• The external surface of the plaster is different from the mold.

• The plaster of Paris does not solidify properly.