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Worksheetssec 2 science revision #4
Total questions: 15
Worksheet time: 30mins
which parts of the ear vibrate when sound is heard?
ear bones and ear canal
ear bones and ear drum
ear drum and ear canal
external ear and ear canal
the graph shows the change in temperature of a material as it is heated. which part of the graph shows that the material is boiling ?
a
b
c
d
this substance is stored in seeds. it is broken down by enzyme amylase during seed germination. what could this substace be ?
fats
protein
starch
sucrose
...... energy can be transmitted in vacuum but ....... energy cannot.
heat, light
light, sound
sound, heat
sound, light
which of the following is a potential consequence when a multi-socket plug adapter is used to connect many appliances to the same socket ?
the apliances will be damaged due to the higher current that flows through each appliance
The current drawn from the mains gets higher and overheating may occur
The flow of the current will be slowed down and the power to each appliance will be reduced
The voltage across the live and neutral wires increases and overheating may occur
which statement(s) about sound is correct ?
I only
I and II only
II and III only
I, II and III only
A
B
C
D
A
B
C
D
which statement is true about a food chain ?
a food chain mmust always start with a producer
food chains usually have five links
the number of consummers always increases along a food chain
the size of the consumers decreases along a food chain
III only
I, II and III only
I, II and IV only
I. II. III and IV
I and II only
I, II and IV only
I, III and IV only
I, II, III and IV
anthony finds it hard to unscrew the cap of a bottle of jam. what should we do ?
cool both the cap and the bottle
cool the bottle
heat both the cap and the bottle
heat the bottle
what was observed when a piece of damp litmus paper was dipped into hydrochloric acid ?
the blue litmus paper turns red
the red litmus paper turns blue
no change was observed
the blue litmus paper turns red then blue
which of the following is not possible when a force acts on an object ?
the object slows down
the object moves faster
the object changes it mass
the object changes its shape
