AQA GCSE physics - matter topic

What is the equation that links energy transferred (E), power (P) and time (t)?

• Power = Energy Transferred / Time, or P=E/t

• Power = Time / Energy Transferred, or P=t/E

• Power = Energy Transferred x Time, or P=Et

What is the equation that links efficiency, total power (or energy) in and useful power (or energy) out?

• Efficiency = Useful Power (or Energy) Out / Total Power (or Energy) In

• Efficiency = Useful Power (or Energy) Out x Total Power (or Energy) In

• Efficiency = Total Power (or Energy) In / Useful Power (or Energy) Out

Tags

NGSS.MS-ETS1-4

What is the equation that links density (ρ), mass (m) and volume (V)?

• Density = Volume x Mass, or ρ=Vm

• Density = Mass / Volume, or ρ=m/V

• Density = Volume / Mass, or ρ=V/m

The internal energy of a substance is made up of these two parts:

• elastic energy and potential energy

• internal energy and vibration energy

• potential energy and kinetic energy

• kinetic energy and elastic energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-2

When we increase the kinetic energy of particles we also increase their .............?

• mass

• temperature

• size

• area

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When a substance is getting hotter, which internal energy store is increasing?

• gravitational

• potential

• kinetic

• elastic

Tags

NGSS.MS-PS1-4

When we melt a substance we transfer energy to the substance to break the .................... between the particles.

• bombs

• moulds

• wounds

• bonds

Tags

NGSS.MS-PS1-4

The temperature at which a substance changes state from a solid to a liquid is called the ...............?

• melting point

• boiling point

• evaporation point

• turning point

Tags

NGSS.MS-PS1-4

What state is iron in between C and D?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

What is the melting point of iron?

• 0 ^oC

• 1500 ^oC

• 2800 ^oC

• 3300 ^oC

Tags

NGSS.MS-PS1-4