I can name some forces. Complete a list of different forces and give an example of where each can be found. Lift Friction Tension Magnetic Air Resistance I can describe what forces do. Use the information below to explain the different things that forces do. A force is… You cannot _______ a force, but you can _______ a force and see the _______ of the force. Words for gap fill: - Feel - Effects - See Forces make things happen or stop them from happening. There are 3 effects of forces; 1. A force can change the ______ of an object. 2. A force can change the _____ of an object, making it… 3. A force can change the ________of an object. I can identify a ’contact force’ and ‘non-contact force’. Sort the forces below into ‘contact’ and ‘non-contact’ forces. Contact forces need to touch an object before they can affect it. Non-contact forces can affect objects from a distance. Air Resistance Forces to sort: Tension Magnetic Lift Upthrust Friction Weight Static Electricity I can describe what interaction pairs mean & identify some in a situation. Use the information below to describe what interaction pairs mean and give some examples using the pictures to help. Forces occur when there is an interaction between two objects. These forces always happen in pairs – when one object exerts a force on another, it always experiences a force in return. One common interaction pair of forces is found in a rocket or a jet engine: •As the fuel burns, exhaust gases are produced. •The rocket engine pushes these gases out backwards. •The gases push the space shuttle forwards, with the same size force in the opposite direction. That’s how rockets work. I can interpret force diagrams used to illustrate problems involving gravity. Using the example below to help, complete the forces diagram worksheet and explain what is happening in each in terms of; What is the forces acting on the object? Are they balanced? Which direction is the object moving? The forces acting in the vertical direction on the astronaut is thrust upwards and weight downwards. These forces are unbalanced with a resultant force of 1N upwards. The forces acting in the horizontal direction are balanced and so the astronaut is moving at a constant speed. I can make predictions about pairs of forces acting in unfamiliar situations. For each of the examples on the worksheet, decide in what direction the resultant force goes and add an arrow to show direction of resultant force. Label the arrow with the size of the resultant force. Example 5N The resultant force would be acting downwards with a size of 10N Resultant force 10N 15-5 = 10N 15N I can list examples of balanced and unbalanced forces. Use the images below to give 3 examples of balanced forces and 3 examples of unbalanced forces. I can calculate resultant forces. For each of the examples on the worksheet, decide in what direction the resultant force goes and add an arrow to show direction of resultant force. Label the arrow with the size of the resultant force. Example 5N The resultant force would be acting downwards with a size of 10N Resultant force 10N 15-5 = 10N 15N I can draw a force diagram for a problem involving gravity. Use the information below to create a basic force diagram using a box to represent the object. Make sure you label the forces and their sizes on the diagram. A person has just jumped out of the plane and opened their parachute to slow their landing. The open parachute has created an air resistance force upwards of 250N. The weight of the person is 180N. The wind is pushing the person to the right with a force of 25N and friction/air resistance is pushing to the right with a force of 25N. I can explain why speed/direction of objects can change using force arrows. Answer the following questions in your book in full sentences. In a forces diagram….. - What two things does the arrows tell you? - How can you determine which direction the object is moving? - How can you tell if the speed is changing?
