Simple and Complex Machines

How do simple machines change the direction of force?

• By reducing the distance the force is applied over

• By eliminating the need for force altogether

• By redirecting the applied force over a longer distance or using mechanisms like pulleys or levers.

• By increasing the force applied directly

What is a simple machine?

• A simple machine is a mechanical device that changes the direction or magnitude of a force.

• A simple machine is a term used in biology to describe a specific organ in organisms.

• A simple machine is a type of software used for basic tasks.

• A simple machine is a complex system that performs multiple functions simultaneously.

Name three examples of simple machines.

• 1. Lever (e.g., seesaw) 2. Pulley (e.g., flagpole) 3. Inclined plane (e.g., ramp)

• Gear (e.g., clock gear)

• Screw (e.g., screwdriver)

• Wheel (e.g., bicycle wheel)

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What is a complex machine?

• A complex machine is a digital device that uses software to perform work.

• A complex machine is a natural phenomenon that occurs without human intervention.

• A complex machine is a simple device that uses one simple machine to perform work.

• A complex machine is a mechanical device that uses multiple simple machines to perform work.

How do simple machines make work easier?

• Simple machines increase the amount of force needed to do work

• Simple machines achieve this by reducing the amount of force needed to do work, making tasks more manageable.

• Simple machines have no impact on the amount of force needed to do work

• Simple machines make work more difficult

Discuss the importance of simple machines in everyday life.

• Simple machines are only used in industrial settings

• Simple machines play a crucial role in simplifying tasks and increasing efficiency in daily activities.

• Simple machines are too complex for everyday use

• Simple machines have no impact on daily tasks

What are the six types of simple machines?

• pulley, wedge, gear

• gear, spring, magnet

• lever, pulley, wheel and axle, inclined plane, wedge, screw

• screw, spring, magnet

Explain the role of simple machines in reducing the amount of force needed to do work.

• Simple machines increase the amount of force needed to do work by changing the direction, decreasing distance, or dividing the force.

• Simple machines have no impact on the amount of force needed to do work.

• Simple machines only work in specific conditions and are not universally applicable.

• Simple machines reduce the amount of force needed to do work by changing the direction, increasing distance, or multiplying the force.

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What are compound machines?

• Compound machines are devices that consist of two or more simple machines working together to accomplish a task.

• Compound machines are devices that are made up of complex machines.

• Compound machines are devices that are incapable of performing any tasks.

• Compound machines are devices that only use one simple machine to accomplish a task.

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Provide an example of a compound machine and explain how it works.

• A toaster oven is a compound machine that works by combining simple machines like heating elements, timers, and trays to cook food.

• A bicycle is a compound machine that works by combining simple machines like wheels, pedals, and gears to enable motion.

• A vacuum cleaner is a compound machine that works by combining simple machines like a motor, suction fan, and filters to clean floors.

• A lawnmower is a compound machine that works by combining simple machines like blades, wheels, and a motor to cut grass.

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