Mechanical Systems: Explore Machines and Mechanisms for Year 6 Design and Technology

Question 1

Which of these is not a type of lever?

Accepted Answer

Fourth class lever

Answer

First class lever

Answer

Second class lever

Answer

Third class lever

Question 2

Which of these is NOT a force that can make an object move differently?

Accepted Answer

Wishing

Answer

Push

Answer

Pull

Answer

Gravity

Question 3

Which of these is NOT a gear used to transmit motion?

Accepted Answer

Cam

Answer

Spur gear

Answer

Bevel gear

Answer

Rack and pinion

Question 4

Which of these is NOT a type of lever we've learned about?

Accepted Answer

Fourth-class lever

Answer

First-class lever

Answer

Second-class lever

Answer

Third-class lever

Question 5

Which of these is not a type of lever?

Accepted Answer

Fourth class

Answer

First class

Answer

Second class

Answer

Third class

Question 6

Which of these is NOT a simple mechanical system often found in everyday objects?

Accepted Answer

Batteries

Answer

Levers

Answer

Gears

Answer

Pulleys

Question 7

Which factor is NOT used to calculate the efficiency of a mechanical system?

Accepted Answer

Temperature

Answer

Work input

Answer

Work output

Answer

Power input

Question 8

In a mechanical system, what is the purpose of a cam follower?

Accepted Answer

To transfer motion from a cam to another part of the system.

Answer

To reduce friction between two moving parts.

Answer

To hold two parts of a system together.

Answer

To change the direction of motion in a system.

Question 9

Which of these is NOT a type of gear?

Accepted Answer

Chain drive

Answer

Spur gear

Answer

Bevel gear

Answer

Worm gear

Question 10

When a bike moves across flat ground, which force is NOT acting on it?

Accepted Answer

Elastic force

Answer

Gravitational force

Answer

Friction

Question 11

In a cam and cam follower mechanism, which part spins and pushes the other part to move?

Accepted Answer

Cam

Answer

Cam follower

Answer

Lever

Answer

Pulley

Question 12

Which of these is not a force?

Accepted Answer

Speed

Answer

A push

Answer

A pull

Answer

Gravity

Question 13

Which lever has the pivot point in the middle?

Accepted Answer

Balanced lever

Answer

First-class lever

Answer

Second-class lever

Question 14

Which type of pulley moves with the object it's attached to?

Accepted Answer

Movable pulley

Answer

Fixed pulley

Question 15

Which of these is NOT a type of friction that can affect moving objects?

Accepted Answer

Magnetic friction

Answer

Static friction

Answer

Sliding friction

Answer

Rolling friction

Question 16

Which of the following is NOT a type of mechanical system?

Accepted Answer

Magnets

Answer

Levers

Answer

Pulleys

Answer

Gears

Question 17

Which of the following is not a type of gear?

Accepted Answer

Belt

Answer

Spur gear

Answer

Bevel gear

Answer

Worm gear

Question 18

Which of these is NOT a force that can make an object move?

Accepted Answer

Balance

Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 19

In a cam follower mechanism, which part makes direct contact with the cam and moves according to its shape?

Accepted Answer

Follower arm

Answer

Camshaft

Answer

Spring

Answer

Cam lobe

Question 20

Which of these is not a type of gear used in machines?

Accepted Answer

Chain

Answer

Spur gear

Answer

Bevel gear

Answer

Worm gear

Question 21

When you push a box across the floor, the friction force acts:

Accepted Answer

In the opposite direction to which you're pushing

Answer

In the same direction you're pushing

Answer

Upwards, perpendicular to the floor

Question 22

Which of these is not a type of gear?

Accepted Answer

Pulley

Answer

Spur gear

Answer

Bevel gear

Answer

Worm gear

Question 23

Which of these is **not** a mechanical system?

Accepted Answer

Light switch

Answer

Lever

Answer

Pulley

Answer

Gear

Question 24

Which of these is NOT a simple machine?

Accepted Answer

Engine

Answer

Lever

Answer

Pulley

Answer

Gear

Question 25

Which of these is NOT a mechanical system?

Accepted Answer

Light switches

Answer

Levers

Answer

Pulleys

Answer

Gears

Question 26

Which of these is not a type of lever?

Accepted Answer

Wedge

Answer

First-class lever

Answer

Second-class lever

Answer

Third-class lever

Question 27

When riding a bicycle, which gear would make you pedal the slowest but move the bike the fastest?

Accepted Answer

Fewer teeth on the front chainring and more teeth on the back cassette

Answer

More teeth on the front chainring and fewer teeth on the back cassette

Answer

Same number of teeth on both the front chainring and the back cassette

Question 28

Which of these activities does NOT involve the use of mechanical systems?

Accepted Answer

Watering the garden with a hose

Answer

Riding a bicycle

Answer

Opening a door with a handle

Answer

Using a can opener

Question 29

How does friction affect the efficiency of a pulley system?

Accepted Answer

It reduces the efficiency of the system.

Answer

It makes the system more efficient.

Answer

It has no effect on the efficiency of the system.

Answer

It increases the efficiency of the system at high speeds.

Question 30

When designing and building mechanical systems, what is the most important safety consideration?

Accepted Answer

Including safeguards to prevent injuries, such as guards around moving parts

Answer

Using only high-quality materials to ensure durability

Answer

Making sure the system is efficient to minimize energy consumption

Answer

Ensuring the system is visually appealing to users

Question 31

Which forces can influence the movement of mechanical systems, and how do these forces affect the system's motion?

Accepted Answer

Friction, gravity, and applied force can affect the motion of a mechanical system.

Answer

Only friction and gravity can affect the motion of a mechanical system.

Answer

The type of force acting on a mechanical system has no effect on its motion.

Answer

Only applied force can affect the motion of a mechanical system.

Question 32

When finding the mechanical advantage of a lever, which factor is NOT taken into account?

Accepted Answer

The weight of the object being lifted

Answer

The length of the effort arm

Answer

The length of the load arm

Answer

The distance between the fulcrum and the effort force

Question 33

In a mechanical system, sensors and actuators play crucial roles. Explain how sensors and actuators work together to automate and control the system.

Accepted Answer

Sensors detect changes (e.g., temperature, pressure) and send signals to actuators, which adjust the system's behavior.

Answer

Sensors receive commands from actuators to control system movements and actions.

Answer

Sensors and actuators are only used in complex mechanical systems.

Answer

Sensors and actuators function independently in a mechanical system.

Question 34

Why are maintenance schedules crucial for mechanical systems?

Accepted Answer

Prevent costly repairs and breakdowns

Accepted Answer

Extend the system's lifespan and efficiency

Answer

Comply with legal safety regulations

Question 35

What is the main purpose of a differential in a car?

Accepted Answer

To enable wheels on the same axle to rotate at different speeds during turns.

Answer

To allow wheels to rotate at the same speed.

Answer

To increase the car's speed.

Answer

To transmit power from the engine to the wheels.

Question 36

What force makes an object spin?

Accepted Answer

Torque

Answer

Tension

Answer

Friction

Question 37

What is the name of the point where a lever turns?

Accepted Answer

Fulcrum

Answer

Load

Answer

Effort

Answer

Distance

Question 38

Which of these gears has teeth on the inside?

Accepted Answer

Worm gear

Answer

Sprocket

Answer

Pinion

Answer

Cog

Question 39

Which of these is NOT a factor that affects how well a lever works?

Accepted Answer

Material of the lever

Answer

Length of the input arm

Answer

Length of the output arm

Answer

Weight of the object being lifted

Question 40

What is the name of the force that slows down moving objects?

Accepted Answer

Friction

Answer

Gravity

Answer

Inertia

Answer

Air resistance

Question 41

What are the three main types of mechanical systems?

Accepted Answer

Levers, pulleys, and gears

Answer

Batteries, circuits, and motors

Answer

Springs, magnets, and fluids

Answer

Levers, wheels, and axles

Question 42

What is the main purpose of a pulley?

Accepted Answer

To lift heavy objects with a smaller force

Answer

To change the direction of a force

Answer

To increase the speed of a moving object

Answer

To store energy

Question 43

What does the mechanical advantage of a lever tell us?

Accepted Answer

How much force is gained by using the lever

Answer

How much force is needed to lift a load

Answer

How far the load will move when the effort is applied

Answer

How fast the lever will move

Question 44

Which of the following is an everyday example of a first class lever?

Accepted Answer

A seesaw

Answer

A wheelbarrow

Answer

A pair of pliers

Question 45

Which of the following is NOT a type of mechanical system used in everyday objects?

Accepted Answer

Electromagnets

Answer

Levers

Answer

Gears

Answer

Pulleys

Question 46

What is the main purpose of using a lever?

Accepted Answer

To lift heavy objects with less effort

Answer

To change the direction of motion

Answer

To increase speed

Answer

To store energy

Question 47

Which type of gear is used to change the direction of motion between two shafts?

Accepted Answer

Bevel gear

Answer

Spur gear

Answer

Worm gear

Answer

Rack and pinion

Question 48

What are the three types of levers?

Accepted Answer

First-class, Second-class, Third-class

Answer

First-class, Second-class, Fourth-class

Answer

Second-class, Third-class, Fourth-class

Answer

First-class, Third-class, Fourth-class

Question 49

What is the main purpose of a pulley?

Accepted Answer

To change the direction or magnitude of a force

Answer

To multiply a force

Answer

To reduce friction

Answer

To store energy

Question 50

Which type of gear has meshing teeth that are shaped like a worm and a wheel?

Accepted Answer

Worm gear

Answer

Spur gear

Answer

Bevel gear

Answer

Rack and pinion

Question 51

What is an example of a compound machine?

Accepted Answer

Bicycle

Answer

Pulley system

Answer

Lever

Answer

Gear

Question 52

Which material is best suited for making a gear?

Accepted Answer

Metal

Answer

Wood

Answer

Plastic

Answer

Rubber

Question 53

Which type of gear has sloping teeth that allow it to change the direction of motion?

Accepted Answer

Bevel gear

Answer

Spur gear

Answer

Worm gear

Question 54

What is the purpose of a ratchet in a mechanism?

Accepted Answer

To prevent the mechanism from moving backward

Answer

To speed up the mechanism

Answer

To make the mechanism easier to operate

Question 55

What does the mechanical advantage of a lever tell us?

Accepted Answer

How much easier it is to lift a load using the lever

Answer

How much heavier the load is than the effort

Answer

How far the effort is from the fulcrum

Question 56

What is the purpose of lubrication in a mechanical system?

Accepted Answer

To reduce friction

Answer

To increase friction

Answer

To protect against rust

Question 57

Which of these is an example of a mechanical system?

Accepted Answer

A bicycle

Answer

A computer

Answer

A light bulb

Question 58

What is the function of a spring in a mechanical system?

Accepted Answer

To store and release energy

Answer

To reduce friction

Answer

To change the direction of a force

Question 59

Which of the following is an example of a **Class 1** lever?

Accepted Answer

See-saw

Answer

Pair of scissors

Answer

Wheelbarrow

Answer

Bottle opener

Question 60

What is a **key** advantage of using a pulley system?

Accepted Answer

To make work easier

Answer

To lift heavier objects

Answer

To change the direction of force

Answer

To increase speed

Question 61

When friction in a mechanical system increases, what happens to its efficiency?

Accepted Answer

Decreases

Answer

Increases

Answer

Stays the same

Answer

Becomes negative

Question 62

Which of the following is NOT a type of mechanical system?

Accepted Answer

Battery

Answer

Pulley

Answer

Gear

Answer

Lever

Question 63

Which type of mechanical system changes the direction of force?

Accepted Answer

Pulley

Answer

Lever

Answer

Screw

Answer

Gear

Question 64

What is the purpose of a gear?

Accepted Answer

To change the speed and direction of motion

Answer

To change the direction of force

Answer

To amplify force