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Lower secondary checkpoint science revision past papers questions
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Lower secondary checkpoint science revision past papers questions
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[Type here],Dr. Ebrahim Salah
+201002149868
Look at the diagram of a plant.
It shows the movement of water through the plant.
(a) Complete the three labels on the diagram. [2]
(b) Minerals are dissolved in the water that moves through a plant.
Write down the name of the mineral needed to make chlorophyll.
[1]
2 Look at the diagram.
It shows part of the Periodic Table.
(a) Write down the chemical symbol for the element which has the electronic structure 2.8.4.
[1]
(b) Write down the chemical symbol for an element in the same group as Be.
[1]
(c) Hydrogen and oxygen react together to make molecules of water.
Write down the type of bonding in a water molecule.
[1]
1|Pa
,Dr. Ebrahim Salah
+201002149868
Angelique investigates four sounds A, B, C and D using an oscilloscope.
3
Look at her oscilloscope traces.
(a) Circle the loudest sound.
A B C D
[1]
(b) Which of these will make the sound louder?
Tick ( ) the correct answer.
increasing the frequency decreasing the frequency
increasing the amplitude decreasing the amplitude
[1]
(c) Circle the sound with the highest pitch.
A B C D
[1]
(d) Which of these increases the pitch of the sound?
Tick ( ) the correct answer.
increasing the frequency decreasing the frequency
increasing the amplitude decreasing the amplitude
[1]
2|Pa
, Dr. Ebrahim Salah
+201002149868
4 This question is about stars and star systems.
(a) Stars can be classified according to their properties.
Look at the table of the properties of some stars.
average mass average radius average luminosity
star type colour
(the Sun = 1) (the Sun = 1) (the Sun = 1)
O blue 60 15 1 400 000
B blue 18 7 66 000
A blue 3.2 2.5 80
F blue to white 1.7 1.3 6
G white to yellow 1.1 1.1 1.2
K orange to red 0.8 0.9 0.4
M red 0.3 0.4 0.04
Rigel is a star with:
mass 18 times that of the Sun
luminosity 66 000 times that of the Sun.
Write down the star type and the colour of Rigel.
star type
colour
[1]
3|Pa
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