Y8 Physics Revision Quiz

What is the unit of work and energy in the SI system?

• joule (J)

• ampere (A)

• newton (N)

• watt (W)

What is the relationship between voltage, current, and resistance in an electrical circuit?

• Resistance is directly proportional to current and inversely proportional to voltage

• Voltage is directly proportional to resistance and inversely proportional to current

• Ohm's Law describes the relationship between voltage, current, and resistance in an electrical circuit.

• Current is directly proportional to voltage and inversely proportional to resistance

What type of wave requires a medium to travel through?

• Light wave

• Sound wave

• Mechanical wave

• Electromagnetic wave

What is the formula to calculate force?

• The formula to calculate force is F = m - a, where F is the force, m is the mass, and a is the acceleration.

• The formula to calculate force is F = m / a, where F is the force, m is the mass, and a is the acceleration.

• The formula to calculate force is F = m + a, where F is the force, m is the mass, and a is the acceleration.

• The formula to calculate force is F = m * a, where F is the force, m is the mass, and a is the acceleration.

What is the unit of measurement for energy?

• Pound

• Gallon

• Joule

• Meter

What is the SI unit of electric charge?

• Ampere

• Volt

• Ohm

• Coulomb

What is the speed of sound in air at room temperature?

• 500 meters per second

• 200 meters per second

• 343 meters per second

• 100 meters per second

What is the difference between speed and velocity?

• Speed is a scalar quantity that measures the rate of motion, while velocity is a vector quantity that measures both the rate and direction of motion.

• Velocity is a scalar quantity and speed is a vector quantity

• Speed and velocity are the same thing

• Speed measures both the rate and direction of motion, while velocity only measures the rate of motion

What is the relationship between force, mass, and acceleration?

• Force is equal to mass minus acceleration (F = m - a)

• Force is equal to mass plus acceleration (F = m + a)

• Force is equal to mass divided by acceleration (F = m/a)

• Force is equal to mass times acceleration (F = ma)

What is the direction of the force required to keep an object moving in a circular path?

• Upward force

• Downward force

• Centrifugal force

• Centripetal force