Answers: Level6

15.     (a)    

award a mark for each correct line

if more than four lines are drawn deduct
one mark for each extra line
                    4

 

(b)     the Sun                                                                                                              1

[5]

 

 

16.     (a)     A   D   E                                           letters may be written in any order           3

if more than three letters are given deduct one mark for each incorrect letter; minimum mark zero

 

(b)     (i)      gravity or weight                                                                                       1

(ii)     air resistance or drag                accept ‘friction’ or ‘wind resistance’       1

do not accept ‘wind’ or ‘upthrust’

 

(c)     the bright flash of light was seen         if more than one box is ticked award       1
first                                                   no mark

         light travels faster than sound              accept ‘the sound takes longer to            1

reach you’ or ‘light travels faster’

do not accept ‘the sound takes time to
reach you’ or ‘light travels fast’

[7]

 

 

17.     (a)     point E                                               if more than one box is ticked                  1
                                                         award no mark

(b)     continuous ray from point to eye          accept a ray coming either from point E 1

or from the answer to (a)

 

         straight lines to the mirrors at appropriate angles                                                   1

reflections must be at the surfaces of the mirrors and lines must not extend behind the mirrors

the angle between the incident and the reflected rays should be approximately 90°

this mark may be awarded even if the reflection from the second mirror to the eye is not given

         arrow anywhere along ray pointing from tree to eye                                              1

 

(c)     any one from

·   move bottom of periscope              accept ‘tilt it’ or ‘change the angle’         1
towards wall

·   make it upright

·   lift it higher                                    accept ‘move it up’
                                                    or
‘push periscope further over the wall’

accept ‘change angle of top mirror’ or ‘change angle of mirrors

do not accept ‘move it’

[5]

 

 

 

18.     (a)     (i)      25 000 N                               if more than one box is ticked,                 1
                                               award no mark

(ii)     an arrow pointing in the opposite
direction to pull of the towrope as shown below                                           1

the arrow parallel to the tugboat may be drawn anywhere on the diagram

do not accept a horizontal arrow

 

(b)     (i)      more than zero but less             if more than one box is ticked,                 1
than 25 000 N                           award no mark

 

(ii)     25 000N                                if more than one box is ticked,                 1
                                               award no mark

 

(iii)     any one from                                                                                            1

·   south or southwards

·   in the opposite direction to the movement or pull

·   away from tugboat

accept ‘opposing motion’ or ‘backwards’

[5]

 

 

 

19.     (a)     It is between the orbit of Earth            if more than one box is ticked,                 1
and the orbit of Jupiter                        award no mark

accept the orbit drawn on the diagram provided that is clearly labelled

 

(b)     (i)      an indication of any point           the midpoint of the planet must lie            1
within the limits shown              within the limits shown

 

(ii)     because the distance between Venus and the Earth changes                        1

accept ‘it gets closer’ or ‘it gets further away’ or ‘it is at different distances

 

(c)     (i)      an indication of any point within the limits shown                                         1

the midpoint of the planet must lie within the limits shown

 

(ii)     because the distance between Jupiter and the earth changes                        1

accept ‘because of the angle which Jupiter is seen from’ or ‘it gets closer’ or ‘it gets further away’ or ‘it is at different distances

do not accept ‘because of the weather or air pollution

 

(d)     any two from                                                                                                     2

·   Jupiter is further from the Sun        accept ‘Jupiter is further away’ or
or
Venus is closer to the Sun         ‘Venus is nearer’

·   Jupiter is further from the Earth      do not accept ‘it is closer or further away’
or
Venus is closer to the Earth

·   Jupiter’s clouds are less                 accept ‘Jupiter absorbs more light’ or
reflective or Venus’s clouds are     ‘Venus has a higher albedo’
more reflective

[7]

 

 

20.     (a)     one mark is for storing  energy by photosynthesis; the other mark is for the formation of oil from living things

         living things use energy from               accept ‘plants and animals store              1
the Sun to grow                                  energy from the Sun’

         oil is formed from the remains             accept ‘oil is made of dead animals         1
of living things                                    or plants’

 

(b)     (i)      because it cannot be replaced    do not accept ‘you cannot use it over       1
once it is used or because it      and over again’ or ‘it cannot be recycled’
takes a long time to form          

 

(ii)     coal                                                                                                       1

         natural gas                                                                                             1

if more than two boxes are ticked, deduct one mark for each incorrectly ticked box

minimum mark zero

[5]

 

 

21.     (a)     bulb X                                               do not accept ‘both bulbs’                        1
                                                         orbulb X and bulb Y’

 

(b)     neither or no bulb or  none                                                                                  1

 

(c)     (i)      goes out                                                                                                    1

(ii)     gets brighter                                                                                              1

 

(d)     (i)      gets brighter                                                                                              1

(ii)     goes out                                                                                                    1

[6]

 

 

22.     (a)     (i)                                                                                                                      1

the mark is for an arrow pointing to the left as shown
the arrow may be anywhere on the diagram accept an arrow pointing to the left, draw in the space beneath the question

 

(ii)     equal to                                    accept ‘equal’                                          1

 

(b)     (i)      backwards                               accept ‘in the opposite direction to the    1
                                               movement’ or ‘in the opposite direction’
                                               or ‘to the left’

accept an arrow drawn pointing to the left either on the diagram, if labelled clearly, or in the space beneath the question

(ii)     between 0 and 5000 N           if more than one box is ticked,                 1
                                               award no mark

 

(c)     5000 N                                           if more than one box is ticked                  1
                                               award no mark

[5]

 

 

23.     (a)     Jupiter                                                                                                                1

 

(b)     (i)      dot at (1,150)                        the dot must be vertically above 1 year    1
                                               the label Earth is not required for the mark

the Earth takes 1 year to           accept ‘it is 150 million km from the Sun’ 1
orbit the Sun

 

(ii)     cross at (0.6, 110)                 accept a cross on the curve between 75   1
                                               and 125 million km from the Sun

the label Venus is not required for the mark

 

(c)     Iris, because it takes longest                both the asteroid and the reason are        1
                                                         required for the mark

do not accept ‘Iris because it’s 5.51’

[5]

 

 

24.     (a)    

one mark is for a ray which bends to the right when it enters the prism
the ray must be within the limits shown

1

one mark is for a ray which bends downwards when it leaves the prism
the ray must be within the limits shown

 

1

award no marks if the lines are not straight

 

(b)     (i)      a spectrum                               accept ‘all the colours’                            1
                                              
or ‘the colours of the rainbow’

do not accept ‘a rainbow’ or ‘colours’

 

(ii)     a red spot or a red line              accept ‘red light’ or  ‘red’ or ‘all the       1
                                               colours except red would disappear’

do not accept ‘a red screen’

 

 (iii)    it absorbs                                 accept ‘it only lets red light pass’             1
or stops all the other colours      do not accept ‘it lets red light pass’

[5]

 

 

25.     (a)     the light is scattered by the ball            accept ‘it is scattered or reflected            1

                                                                            or bounces off the ball'

         some of the light from the ball             accept ‘it goes into or gets to her eye'      1
                                                         enters Naomi's eye

 

(b)     (i)      colour    colour of   the colour the
of ball     the light     ball appears
                                   to Naomi
white           red                red            do not accept 'pink' or ‘light red'    1
green        white             green          do not accept ‘light green'              1

 

(ii)     any one from

·   it absorbs all the light            accept ‘it absorbs light'                            1

·   it does not scatter any light   accept 'it does not reflect light'                 1

 

(c)     equal to                                             accept 'equals' or 'the same as'                 1

         equal to                                             accept 'equals' or 'the same as'                 1

 

(d)     one mark is for describing scattering and one mark is for describing reflection

         scattering sends or reflects                 accept 'scattered light goes all over the   1
light in all directions                            place' or ‘the light from the paper goes
                                                         off
in lots of rays' or ‘no image can be
                                                         seen in the paper'

 

         reflection sends light in one                 accept ‘the light from the mirror              1
direction or to one point                      is all in one ray or beam' or 'reflected
                                                         light goes at one exact angle’ or  ‘an
                                                         image can be seen in the mirror

[9]

 

 

26.     (a)     The tension equals the weight.          if more than one box is ticked,                 1
                                                         award no mark

(b)     tension is greater than weight              accept ‘tension is bigger' or 'weight         1
                                                         is less' or 'the upward force is bigger'
                                                         or 'the downward force is smaller'

 

(c)     tension equals weight                          accept ‘they are the same'                        1

(d)     tension is less than weight                   accept ‘tension is less ‘or ‘weight
                                                         is more'
or 'the upward force is less'         1
                                                         or ‘the downward force is bigger'

[4]