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Worksheetsrevision quiz 1
Total questions: 15
Worksheet time: 12mins
Which of these changes are reversible?
Sand mixed in water.
Rice mixed in sand.
potato that has been baked.
An effervescent tablet (e.g. Alka-Seltzer®) dissolved in water.
Which description best describes what happens when a material is burnt?
The process is reversible.
The process is irreversible: the original material is destroyed to
produce new substance.
The material being burnt disappears.
The material being burnt always turns completely into a
gas.
Physical Changes...
Do not form a new substance.
May change shape or size.
May absorb or release heat.
May change state of matter.
Can often be undone.
Which of the following is/are chemical barrier(s) to prevent pathogens from entering the body?
(1) sebum on the skin
(2) gastric juice in the stomach
(3) mucus in the bronchus
(2) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
The human body has developed defence mechanisms, ways the body uses to help fight infectious diseases. Complete the table below.
A mucus B acid C skin
A acid B mucus C skin
A skin B mucus C acid
True or False: When moon is viewed from the Earth it appeares to change shape.
True
False
True or False: These apparent changes in the shape of the Moon are called tides.
True
False
True or False: We can only see the unilt side of the Moon.
True
False
True or False: At different points in the Moon's orbit around the Sun, different amounts of the Moon's sunlit side face the Earth.
True
False
The diagram shows a model of the human circulatory system.
The arrows show the direction of blood flow.
Blood vessel A is ...
an artery
a veins
a cappilaries
a system
The job of the heart is to . . .
pump blood around the body.
send food to the small intestines.
break down food.
give energy to the body.
How does the heart work?
It pumps blood first to the lungs, back to the heart and then around the rest of the body.
It pumps blood first to the rest of the body, back to the lungs and then to the heart.
It pumps blood around the rest of the body, back to the heart and then to the lungs,
It pumps blood first to the rest of the body, back to the heart and then around the rest of he body.
The arteries carry oxygen rich blood away from the heart.
True
False
What will happen to the snake if the snake eats the lizard that contains toxic substances in its body?
Snake can live longer and healthy
Snake's bone might get weaker or the eggs produced cracked
Number of grasshopper increases in the food chain
Number of snake increases in the food chain
