Wedge

The video tutorial introduces wedges as simple machines that help push things apart. It defines a wedge as a triangle-shaped piece of solid material with at least one slanting side ending in a sharp edge. Examples include knives, axes, chisels, and shovels. The tutorial discusses the historical evolution of wedges and their modern applications, such as in airplanes and ships. It concludes with a reflective question about the wedge shape of predator teeth.

What is a wedge primarily used for?

• To rotate objects

• To pull things together

• To push things apart

• To lift heavy objects

Which of the following is NOT an example of a wedge?

• Knife

• Ax

• Chisel

• Pulley

How does a shovel function as a wedge?

• By compressing soil

• By rotating soil

• By slipping between parts of the soil and separating them

• By lifting soil

What is a modern use of wedges in transportation?

• To increase speed

• To reduce air or water resistance

• To enhance fuel efficiency

• To improve comfort

Why might the teeth of predators be wedge-shaped?

• To assist in cutting through flesh

• To make them look intimidating

• To help them chew plants

• To help them swim faster