1. 6E Balanced and unbalanced forces What do you know?

2. 1. What can you use to measure a force? 1.A ruler 2.A forcemeter 3.A tape measure 4.A magnet Response Grid

3. 2. What are the units for force? 1.Kilograms 2.Grams 3.Newtons 4.Centimetres Response Grid

4. 3. What causes weight? 1.The Earth attracting objects 2.The Earth repelling objects 3.The Earth and an object attracting each other 4.Forcemeters Response Grid

5. 4. Which diagram is correct? 1.Large weight Small weight 2.Large weight Small weight 3.Large weight Small weight 4.Large weight Small weight Response Grid

6. 5. Which statements is true? 1.There is an upwards force from the table that is a bit less than the weight 2.There is an upwards force from the table that is the same size as the weight 3.There is an upwards force from the table that is a bit more than the weight 4.There is no upwards force from the table Response Grid

7. 6. What happens when you stretch an elastic band 1.The more you stretch it, the harder it pulls back 2.The more you stretch it, the less it pulls back 3.The force from the elastic band does not change 4.It breaks Response Grid

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9. 7. What is upthrust? 1.A sideways force on things in water 2.A downward force on things in water 3.An upwards force on things in water 4.Any upwards force Response Grid

10. 8. Jenna weighs a stone in air and water. What is the upthrust on the stone? 1.2 N 2.4 N 3.6 N 4.8 N Response Grid

11. 9. Which diagram shows the forces on the toy duck? 1.A 2.B 3.C 4.D Response Grid

12. 10. Which of these things cannot be done by unbalanced forces? 1.Making an object hotter 2.Making an object speed up 3.Changing the direction an object is moving 4.Stopping an object moving Response Grid

13. 11. What are the forces on a falling object? 1.Weight downwards and air resistance upwards 2.Weight downwards and air resistance downwards 3.Weight upwards and air resistance downwards 4.Weight upwards and air resistance upwards Response Grid

14. 12. How can you increase the air resistance of a parachute? 1.Make the parachute smaller 2.Make the parachute bigger 3.Put longer strings on it 4.Change the colour Response Grid

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