Physics Exam May 2022 Flashcards
Which energy store increases as water is heated
Thermal
Which energy store increases when water is pumped uphill into a resovoir
Gravitational potential
One change that would reduce amount of carbon dioxide released by
Transport
Use electric cars to reduce amount CO2 released
One change that would reduce amount of carbon dioxide released by
Generating electricity
Use renewable energy resources like solar panels
Fill in gaps ___________
Nuclei
Neutrons
Gamma rays
Ewuation which links E, P and t
E = P x t
1 precaution to reduce hazard caused by radioactive waste for power stations
Build away from urban areas
Which graoh shows relationship between resustance at temp and length
Last one
Why cell was not electrical hazard to student
Voltage too low to cause harm as can’t produce a current high enough to be dangerous
How student’s hai stands up at end balloon
Negatuve charged dome transfers electrons to student
Student’s hair becomes negatively charged as electrons spread out
Same charges repel so stand up
Which energy store increases as bungee cords stretched
Elastic potential
Why actual max height reached by pod lower
Didn’t take into account the person inside
Which error caused if student’s eye was not in line level water
Systematic error
1 reason student should have used think string instead of thick
Thick string may trap air bubbles could affect accuracy by affecting buoyancy of water
Why without string measuring cylinder not accyrate volume
Ring may not have regular shape
How can students use readings from balance to determine mass of ring
Minus the 0.02 from mass of the ring
Why pressure increased in syringe
Decreased volume for same amount of particles
Less space air particles collide more frequently with syring walls causing more pressure
How does increase in temperature affect air particles inside piston
The mean kinetic energy of the particles increases
Why source A emits radiation
Alpha radiation only travel short distance 1-2cm
Count rate for source A only starts increasing around 2cm
How absorbing material can be used to show which type of radiation emitted by source B
Beta won’t travel through paper
Gamma will travel through
1 safety precaution teacher to reduce radiation dose recieved
Stamd back
1 safety precuation to avoid contamination
Wear gloves
What colour is covering live wire in 3-core cable
Brown
How would time taken for wire to melt be affected if some energy transferred to surroundings
Time taken would increase
More energy needed as lots is lost
