7ALP - Forces and Energy in Everyday Life (level 7&8)

Which of the following is an example of a simple machine?

• Battery

• Lever

• Light bulb

• Solar panel

What type of force is primarily responsible for keeping planets in orbit around the sun?

• Frictional force

• Gravitational force

• Magnetic force

• Elastic force

Which of the following is a form of potential energy?

• Thermal energy

• Kinetic energy

• Gravitational energy

• Sound energy

What is the primary purpose of a force diagram?

• To calculate the speed of an object

• To represent forces acting on an object

• To measure the temperature of an object

• To determine the colour of an object

Which simple machine consists of a wheel with a rope or chain wrapped around it?

• Lever

• Pulley

• Wedge

• Screw

How does an inclined plane make work easier?

• By increasing the distance over which a force is applied

• By decreasing the mass of the object

• By changing the colour of the object

• By increasing the speed of the object

Which of the following factors does NOT affect household energy consumption?

• Appliance choice

• Building design

• Season and climate

• The colour of the walls

What is the unit of force in the metric system?

• Joule

• Newton

• Watt

• Pascal

Which of the following is an example of kinetic energy?

• A stretched rubber band

• A moving car

• A book on a shelf

• A charged battery

What happens to an object when balanced forces act on it?

• It accelerates

• It changes direction

• It remains stationary or moves at a constant speed

• It changes colour