Simple Machines: Multiple Choice Questions for First Grade

📚 Quick Study Guide

🔍 Simple machines are basic tools that make work easier. ⚙️ There are six types of simple machines: lever, wheel and axle, inclined plane, wedge, screw, and pulley. 🍎 A lever is a rigid bar that pivots on a fixed point called a fulcrum. It helps lift heavy objects. 🚗 A wheel and axle consists of a wheel attached to a central bar (axle), which rotate together to reduce friction. ⛰️ An inclined plane is a sloping surface that makes it easier to move objects to a higher level. 🔪 A wedge is a double inclined plane that is used to force objects apart. 🔩 A screw is an inclined plane wrapped around a cylinder that turns rotational motion into linear motion. ⬆️ A pulley is a wheel with a grooved rim around which a rope passes. It helps lift objects by changing the direction of force.

🧪 Practice Quiz

1. Which of these is an example of a lever?
   1. A bicycle
   2. A seesaw
   3. A slide
   4. A doorknob
2. What simple machine helps you raise a flag up a flagpole?
   1. A wedge
   2. A screw
   3. A pulley
   4. An inclined plane
3. What simple machine is a ramp?
   1. A lever
   2. An inclined plane
   3. A wheel and axle
   4. A screw
4. Which of these is an example of a wheel and axle?
   1. A knife
   2. A staircase
   3. A car wheel
   4. A hammer
5. What simple machine helps hold things together tightly?
   1. A pulley
   2. A screw
   3. A lever
   4. A wedge
6. Which of these is a wedge?
   1. A doorstop
   2. A light bulb
   3. A spoon
   4. A pencil
7. Which simple machine helps you cut things?
   1. A pulley
   2. A screw
   3. A lever
   4. A wedge