Year 7 Physics Online Course 9.0

Forces
Introduction to Forces
8 Topics | 7 Quizzes
1 | What is a Force?
What is a Force? – Topic Quiz
2 | Changes In Speed
Changes In Speed – Topic Quiz
3 | Changes In Direction
Changes In Direction – Topic Quiz
4 | Changes In Shape
Changes In Shape – Topic Quiz
5 | Push, Pull and Twist Forces
Push, Pull and Twist Forces – Topic Quiz
6 | Contact and Non Contact Forces
Contact and Non-Contact Forces – Topic Quiz
7 | Measuring Forces
Measuring Forces – Topic Quiz
8 | Summary
Balanced and Unbalanced Forces
6 Topics | 5 Quizzes
1 | Net Force
Net Force – Topic Quiz
2 | Calculating Net Force
Calculating Net Force – Topic Quiz
3 | Balanced Forces
Balanced Forces – Topic Quiz
4 | Unbalanced Forces
Unbalanced Forces – Topic Quiz
5 | Net Force, Mass and Acceleration
Net Force, Mass and Acceleration – Topic Quiz
6 | Summary
Contact Forces
8 Topics | 7 Quizzes
1 | Friction
Friction – Topic Quiz
2 | Kinetic and Static Friction
Kinetic and Static Friction – Topic Quiz
3 | Dry Friction and Drag
Dry Friction and Drag – Topic Quiz
4 | Reducing Friction
Reducing Friction – Topic Quiz
5 | Useful Friction
Useful Friction – Topic Quiz
6 | Buoyancy
Buoyancy – Topic Quiz
7 | Surface Tension
Surface Tension – Topic Quiz
8 | Summary
Non-Contact Forces
11 Topics | 10 Quizzes
1 | Gravitational Force
Gravitational Force – Topic Quiz
2 | Gravity on Earth
Gravity on Earth – Topic Quiz
3 | Gravity in the Solar System
Gravity in the Solar System – Topic Quiz
4 | Mass and Weight
Mass and Weight – Topic Quiz
5 | Gravity and Distance
Gravity and Distance – Topic Quiz
6 | Magnetic Force
Magnetic Force – Topic Quiz
7 | Magnetic Fields
Magnetic Fields – Topic Quiz
8 | Earth’s Magnetic Field
Earth’s Magnetic Field – Topic Quiz
9 | Electrostatic Forces
Electrostatic Forces – Topic Quiz
10 | Static Electricity
Static Electricity – Topic Quiz
11 | Summary
Simple Machines
Simple Machines and Mechanical Advantage
7 Topics | 6 Quizzes
1 | Simple Machines
Simple Machines – Topic Quiz
2 | Input Forces and Output Forces
Input Forces and Output Forces – Topic Quiz
3 | Force, Distance and Work
Force, Distance and Work – Topic Quiz
4 | Mechanical Advantage
Mechanical Advantage – Topic Quiz
5 | Efficiency
Efficiency – Topic Quiz
6 | Complex Machines
Complex Machines – Topic Quiz
7 | Summary
Inclined Planes, Wedges and Screws
8 Topics | 7 Quizzes
1 | Inclined Planes as Simple Machines
Inclined Planes as Simple Machines – Topic Quiz
2 | Mechanical Advantage of Inclined Planes
Mechanical Advantage of Inclined Planes – Topic Quiz
3 | Wedges and Screws
Wedges and Screws – Topic Quiz
4 | Wedges as Simple Machines
Wedges as Simple Machines – Topic Quiz
5 | Mechanical Advantage of Wedges
Mechanical Advantage of Wedges – Topic Quiz
6 | Screws as Simple Machines
Screws as Simple Machines – Topic Quiz
7 | Mechanical Advantage of Screws
Mechanical Advantage of Screws – Topic Quiz
8 | Summary
Levers
10 Topics | 9 Quizzes
1 | Levers as Simple Machines
Levers as Simple Machines – Topic Quiz
2 | Class 1 Levers
Class 1 Levers – Topic Quiz
3 | Class 2 Levers
Class 2 Levers – Topic Quiz
4 | Class 3 Levers
Class 3 Levers – Topic Quiz
5 | Effort Arms and Load Arms
Effort Arms and Load Arms – Topic Quiz
6 | Double Levers and Compound Levers
Double Levers and Compound Levers – Topic Quiz
7 | Mechanical Advantage of Levers
Mechanical Advantage of Levers – Topic Quiz
8 | Force Multipliers and Speed Multipliers
Force Multipliers and Speed Multipliers – Topic Quiz
9 | Levers in the Body
Levers in the Body – Topic Quiz
10 | Summary
Wheels & Axles and Pulleys
10 Topics | 9 Quizzes
1 | Wheels and Axles as Simple Machines
Wheels and Axles as Simple Machines – Topic Quiz
2 | Rotational Speed and Linear Speed
Rotational Speed and Linear Speed – Topic Quiz
3 | Wheels and Axles as Force Multipliers and Speed Multipliers
Wheels and Axles as Force Multipliers and Speed Multipliers – Topic Quiz
4 | Wheels and Axles as Levers
Wheels and Axles as Levers – Topic Quiz
5 | Mechanical Advantage of Wheels and Axles
Mechanical Advantage of Wheels and Axles – Topic Quiz
6 | Pulleys as Simple Machines
Pulleys as Simple Machines – Topic Quiz
7 | Fixed Pulleys, Movable Pulleys and Compound Pulleys
Fixed Pulleys, Movable Pulleys and Compound Pulleys – Topic Quiz
8 | Pulleys as Levers
Pulleys as Levers – Topic Quiz
9 | Mechanical Advantage of Pulleys
Mechanical Advantage of Pulleys – Topic Quiz
10 | Summary
Gears and Drives
6 Topics | 5 Quizzes
1 | Mechanical Power Transmission
Mechanical Power Transmission – Topic Quiz
2 | Gears and Gear Drives
Gears and Gear Drives – Topic Quiz
3 | Belt Drives and Chain Drives
Belt Drives and Chain Drives – Topic Quiz
4 | Mechanical Advantage of Gear Drives
Mechanical Advantage of Gear Drives – Topic Quiz
5 | Mechanical Advantage of Belt Drives and Chain Drives
Mechanical Advantage of Belt Drives and Chain Drives – Topic Quiz
6 | Summary
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3 | Changes In Direction

Year 7 Physics Online Course 9.0 Introduction to Forces 3 | Changes In Direction

Changes In Direction

  • Forces can change the direction that an object is moving in.
  • Example 1
  • If you hit a ball against a wall, the ball will rebound towards you.
  • Example 2
  • Wind can cause a moving object, such as a yacht, to change direction.
force direction squash force direction yacht

Forces can cause a change in the direction of motion.

(Images: Steve McFarland, Wikimedia Commons; PxHere)

 

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