Lesson Forces Science Differentiation in action A force

Science Differentiation in action A force is a _____ Push or ____. Pull which

Science Differentiation in action A force is measured in Newtons (N). A shopping trolley

Science Differentiation in action There are many different forces. Can you give some examples?

Science Differentiation in action We can measure small forces using a: Spring Balance Hang

Science Differentiation in action Forces act in pairs. For every force there is an

Science Differentiation in action FRICTION is a force. It slows down movement between two

Science Differentiation in action Friction is a disadvantage if we want to go quickly.

Science Differentiation in action Why is it important that tyres have good treads?

Science Differentiation in action Describe what is in this picture. What do you think

Science Differentiation in action Rub your hands together very quickly. What happens? Friction causes

Science Differentiation in action We can reduce friction using a Lubricant. Where do we

Science Differentiation in action An apple falls to earth because the force of gravity

Science Differentiation in action What are the forces in this picture?

Science Differentiation in action Review Questions 1. Forces are measured using a ______. HINT

Science Differentiation in action Question to think about! Why doesn’t the satellite fall to

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Lesson: Forces

Science Differentiation in action A force is a _____ Push or ____. Pull which can change the shape, speed or direction of an object. Can you think of some examples of forces changing the: (i) shape, (ii) speed and (iii) direction of an object?

Science Differentiation in action A force is measured in Newtons (N). A shopping trolley is pushed with a force of: ~ 75 N. SIR ISAAC NEWTON

Science Differentiation in action There are many different forces. Can you give some examples?

Science Differentiation in action We can measure small forces using a: Spring Balance Hang an object on the hook and read the scale to find the force of the object pulling down.

Science Differentiation in action Forces act in pairs. For every force there is an equal and opposite force.

Science Differentiation in action FRICTION is a force. It slows down movement between two objects in contact. How can we prevent friction?

Science Differentiation in action Friction is a disadvantage if we want to go quickly. Friction is an advantage if we want to go slowly.

Science Differentiation in action Why is it important that tyres have good treads?

Science Differentiation in action Describe what is in this picture. What do you think happened to the damaged tyres?

Science Differentiation in action Rub your hands together very quickly. What happens? Friction causes heat. Now put some washing up liquid on your hands and rub them together again. What happens?

Science Differentiation in action We can reduce friction using a Lubricant. Where do we use oil to reduce friction? OIL

Science Differentiation in action An apple falls to earth because the force of gravity acts between the apple and the earth. Gravity is the FORCE of attraction between two objects that have mass.

Science Differentiation in action What are the forces in this picture?

Science Differentiation in action Review Questions 1. Forces are measured using a ______. HINT 2. What unit are forces measured in? HINT

Science Differentiation in action Question to think about! Why doesn’t the satellite fall to earth?