Materials and Their Properties

What are the basic components needed to make a simple mortar?

• Clay, gravel, and water

• Sand, gravel, and cement

• Cement, gravel, and water

• Sand, clay, and water

How does balsa wood behave when it is pulled?

• It shatters into pieces

• It bends and returns to its original shape

• It cracks and breaks

• It bends and stays in the new shape

What happens to the metal screen when it is pulled?

• It bends and returns to its original shape

• It bends and stays in the new shape

• It breaks into pieces

• It stretches and snaps back

What is the result of mixing balsa wood with mortar?

• The wall becomes waterproof

• The wall breaks more easily

• The wall takes more weight to break

• The wall bends like balsa wood

Why do engineers mix different materials?

• To improve the aesthetic appeal

• To enhance the strength and functionality

• To make materials cheaper

• To reduce the weight of materials