AQA Combined science trilogy paper 2 Physics

What is it called when an object takes up energy from an EM wave?

• Reflect

• Transmit

• Absorb

• Refract

What is the name of the single point at which an object's mass appears to act?

• Centre of gravity

• Centre of mass

• Centre of force

• Centre of velocity

What is the time needed for one wave to pass a given point called?

• Frequency

• Amplitude

• Period

• Wavelength

On a velocity-time graph, a downwards straight line represents __________.

• acceleration

• constant speed

• deceleration

• stationary

A value with magnitude and direction is a ________?

• scalar

• speed

• vector

• mass

On a distance-time graph, a curved line becoming horizontal represents __________.

• stationary

• acceleration

• deceleration

• constant speed

• increasing speed

On a distance-time graph, a horizontal line represents __________.

• acceleration

• constant speed

• deceleration

• stationary

What is the unit of frequency?

• Metres (m)

• Seconds (s)

• Hertz (Hz)

• Joules (J)

State the law of conservation of momentum.

• Momentum is always conserved in a closed system

• Momentum is lost in a closed system

• Momentum is gained in a closed system

• Momentum is irrelevant in a closed system

On a velocity-time graph, when the line falls below the x-axis, it indicates that the object is __________.

• moving forwards

• stationary

• moving backwards

• accelerating