Flashcards
Paper 1 PAGs
Cards in this deck (29)
- 1List all the equipment needed for PAG 2.1 - determining young’s modulus of a metalG clamp, wooden blocks, long copper wire, tape, meter ruler, micrometer, work bench, 100g masses and a pulley
- 2Describe the set up for PAG 2.1, determining YM of a metalClamp the wire between 2 wooden blocks, and hang it over a pulley over the end of the bench, attaching 100g masses
- 3What is the method for PAG 2.1, finding YM of a metalMeasure diameter in 3 different places. Attach meter ruler to the work bench and place a marker at 0cm on the ruler. Measure the length of wire from the blocks to the marker when it is taught. Attach masses, record the new position of the marker for each mass added, keep adding until you have at least 7 mass values
- 4What are the calculations needed for PAG 2.1 finding YM of a metalFind mean diameter of the wire, and then calculate the mean cross sectional area. Find the force exerted on the wire for each mass value, calculate wire’s extension. Find stress and strain for each mass value and plot a graph of them and draw a line of best fit. The gradient of the line is the YM
- 5Give safety points for PAG 2.1 finding YM of a metalGoggles in case the wire snaps, could bling people and place cushioning under the masses in case wire snaps so they cant hint people feet
- 6In PAG 2.1, why should the wire be long and thin?Higher length will reduce uncertainty in the measurement of original length, thinner wires produce more extension so reducing the uncertainty measurement of the extension
- 7List the equipment needed for gad @>@ - investigating springs in serious and iin parallelStand and clamp, springs, meter ruler and 50g masses
- 8Describe how the apparatus should be set up for PAG 2.2 investigating springsFor springs in series, hang the springs of one another off of the clamp with masses attached at the end, for parallel, north springs are attached to the clamp next to each other
- 9Describe the method for PAG 2.2, investigating springsFor series, record original length, attach mass and record new length and repeat with different numbers of springs. For parallel it is the same but in parallel
- 10What are the calculations for PAG 2.2, investigating springsWork out the extension for each spring combo. Calculate the force constant k for each combo. Find the theoretical k for each combo (1/kt = 1/k1 + 1/k2 …)For parallel do the same, but with kt = k1 + k2 …
- 11Give safety precautions for PAG 2.2, investigating springsDon’t let springs recoil too quickly as they can snap on fingers, wear goggles in case springs snap
- 12List the equipment needed for PAG 2.3 - investigating a property of plasticPlastic bag, guillotine, 100g masses, hole punch, ruler and stand and clamp
- 13Describe the method of PAG 2.3, investigating plastic propertiesSlice up the plastic bag lengthways & width-ways. Hole punch 1 end & attach the strip 2 a clamp stand, measuring original length while taught. Attach masses & measure new length. Repeat until >9 readings & do with other strips. 4 strips that don’t break, remove the masses & record new length after each removal
- 14Describe the calculations for PAG 2.3, investigating plastic propertiesCalculate the extension. Plot a graph of force against extension. On this graph you can see the limit proportionality, which is where the graph now longer obeys Hooke’s law, and the area is the work done
- 15What are the disadvantages of using a hole punch and what can be used instead, in PAG 2.3Using a hole punch means that the weight is not evenly distributed through the slip. Using a bulldog clip wound around the strip would more evenly distribute the weight
- 16List the equiptment needed for PAG6.2 A - experiments with light, microwaving a chocolate barMicrowave oven, ruler, and a chocolate
- 17Name the 3 experiments that can be done in PAG 6.2A - microwaving a chocolate bar
B - investigating refraction and total internal; reflection with transparent blocks
C - young’s double slit experiment - 18List the equipment needed for PAG6.2 B - experiments with light, investigating refraction and total internal reflection with transparent blocksRay box, semicircular and rectangular Pyrex or glass block, white paper sheets, white paper sheets with protractor printed on, pencil and ruler
- 19List the equipment needed 6.2 C - experiments with light, young’s double slit experimentLaser, double slit, screen, ruler
- 20Describe the method for PAG 6.2A - experiments with light, microwaving chocolateRemove the turntable wheels from the microwave so that the plate is stationary. Place choc on the turntable & microwave for 30 secs. Take out choc & observe the pattern of the melted & solid strips. W/ the ruler measure the distance between 4 melted strips & divide by 3 to find distance between adjacent melted strips
- 21Describe the method for PAG 6.2B - experiments with light, investigating refraction and total internal reflection with a transparent semicircular blockplace block on protractor with centre of its diameter on 0°. Direct ray towards this 0° point from a point at nearly 180° & trace ray’s path. Repeat, moving ray around every 10° .Record critical angle where angle of refraction is 90°. Increase angle further & see that it does not leave block, just totally internally reflectes.
- 22Describe the method for PAG 6.2B - experiments with light, investigating refraction and total internal reflection with a transparent rectangular blockPlace block on paper & draw around it. Mark a point on T longer edge 1-2 cm from T corner, T target for the ray. Aim T beam normal to T block & trace T path of T ray, with T straight part of T protractor against T long side of T block. Rotate T beam in 10° Increments, & record each path. Each time measure both angles.
- 23Describe the method for PAG 6.2C - experiments with light, young’s double slit experimentShine laser through the double slit so each slit acts as coherent point source. See the light & dark bands on the screen, mark the centre of each bright spot then turn the laser off & measure the distance of at least 4 fringe spacings. Measure the distance from the slits to the screen (D) and record the spacing between slits (s)
- 24Give the calculations for PAG 6.2A -experiments with light, microwaving chocolatewaves reflect off the walls and interfere to form standing waves w/ nodes (where its solid, min displacement) and antinodes (where its melted, max amplitude). The distance between 2 adjacent melted strips = the distance between 2 antinodes, double to find the λ. The f is shown on the oven. Times the f by λ to find the v as v= fλ
- 25Give the calculations for PAG 6.2B - experiments with light, investigating refraction and total internal reflection of transparent blocksThe refractive index of the rectangular block, n = sin i/ sin r, where i is the angle of
incidence and r is the angle of refraction. The refractive index of the semi circular block is found by, n = 1/sin c where c is the
critical angle. - 26Give the calculations for PAG 6.2C - experiments with light, young’s double slit experimentFind the fringe spacing by dividing the distance across 4 adjacent fringes by 3 to find fringe spacing (w). Rearrange the double slit equation to make ? the subject, ?= ws , and substitute the D
other values, making sure all units are in m, to calculate wavelength. - 27List the equiptment needed for PAG 6.3 - Observing polarising effects using microwaves and light● Polarising filters
● Metal grilles
● Microwave detector
● Microwave transmitter - 28Describe the method for PAG 6.3, observing polarizing effects using microwavesplace vertically aligned metal grille in front of transmitter (giving vertically plane polarised waves) & detector behind the grille. Place a horizontally aligned grille behind the 1st & see whether detector records any microwaves.
- 29Describe the method for PAG 6.3, observing polarizing effects using lightFor light, hold a polarising filter up to eye level, place another filter behind it and rotate it to observe that when the filters are perpendicular, no light gets through.
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- physics A level (M1 Chapter 1 practical skills - unfinished) Flashcards on Paper 1 PAGs, created by lizabeth rawson on 13/05/2022.
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