Year 8 Physics End of Year

In an electrical circuit, current is...

• released by the battery
• the push provided by the battery
• the flow of electrical charges around a circuit
• a device for measuring potential difference

The voltage in a series circuit...

• is shared between the components
• is the same all the way round

Resistance can be calculated by using the equation:

• V = I / R
• V = I x R
• I = V x R
• R = V x I

Which of the following are types of energy

• Thermal, Power, Sound, Chemical
• Kinetic, Friction, Elastic, Light
• Thermal, Kinetic, Nuclear, Thrust
• Thermal, Sound, Electrical, Gravitational

Conduction...

• occurs in solids. It happens when neighboring particles pass on their energy by bumping into their neighboring particle.
• occurs in fluids. It happens when neighboring particles pass on their energy by bumping into their neighboring particle.
• occurs in solids, It happens when the substance heats up causing the particles to spread apart and become less dense. They rise to the top, clump together again and sink in a cycle.
• occurs in fluids, It happens when the substance heats up causing the particles to spread apart and become less dense. They rise to the top, clump together again and sink in a cycle.

Convection...

• occurs in solids. It happens when neighboring particles pass on their energy by bumping into their neighboring particle.
• occurs in fluids. It happens when neighboring particles pass on their energy by bumping into their neighboring particle.
• occurs in solids, It happens when the substance heats up causing the particles to spread apart and become less dense. They rise to the top, clump together again and sink in a cycle.
• occurs in fluids, It happens when the substance heats up causing the particles to spread apart and become less dense. They rise to the top, clump together again and sink in a cycle.

The conservation of energy states that...

• energy can be created and transferred but not destroyed.
• energy cannot be created or destroyed, only transferred.
• energy can be destroyed and transferred but not created.
• energy can be created and destroyed but not trasnferred.

The steeper the line on a distance-time graph...

• the slower the object is travelling
• the faster the object is accelerating
• the faster the object is travelling
• the faster the object is decellerating

Pressure is defined as...

• Force / Area
• Area / Force
• Force x Area

The turning effect of a force is called the...

• Momentum
• Momenta
• Moment