Living things and their enviroments.
Name two things an animal needs from its environment to survive.
food, water, air, home, camouflage,
Circle the natural rock from the list below:
[ Concrete / Brick / Granite / Glass ]
Granite
State the state of matter (Solid, Liquid, or Gas) for each of the following:
(a) Ice cube: _____________
(b) Water vapor (steam): _____________
Ice cube - solid Steam- Gas
Fill in the blank: When the Sun is high up in the sky at noon, shadows are _____________ (longer / shorter).
Shorter
Classify the following items into the correct column: Mains Lamp, Torch, Wooden Spoon, Battery Clock.
Needs Electricity Does Not Need Electricity
needs- lamp,
does not need - torch, spoon, clock
A caterpillar has a green body and lives on green leaves. Explain how its color helps it survive.
It is the same color as its enviroment so it hides from predators.
State one physical property of slate that makes it a suitable material for making roof tiles.
It is waterproof, durable, long lasting, hard, natural
When sugar is stirred into a cup of warm tea, it disappears.
(a) Did the sugar melt or dissolve?
(b) Is this process reversible or irreversible?
dissolve and irreversible
Predict the weather for a day that has dark grey clouds, a low temperature, and strong winds.
rain, storm, lightning, thunder, windy
State the main difference between an electrical appliance powered by a battery and one powered by mains electricity.
Battery power — It runs on stored energy and can work without being plugged in.
Mains electricity — It must be connected to a wall socket to work.
Power supply — Battery devices are portable, but mains‑powered ones usually provide stronger, more consistent power.
A garden has many hibiscus flowers that attract butterflies. If someone picks all the hibiscus flowers, predict what will happen to the number of butterflies in the garden and give a reason.
they will die because that is thier food.
Complete the statements about how rocks are formed using the words provided (Lava, High Heat, Sediments):
(a) Basalt is formed when cool lava hardens. [1]
(b) Quartzite is formed when existing rock is changed under intense _____________.
Heat
An experiment is set up with a torchlight pointed at two sheets (X and Y):
Sheet X is clear glass (transparent).
Sheet Y is thick cardboard (opaque).
Explain why a clear shadow is formed on Sheet Y when light shines through Sheet X.
A clear shadow forms on Sheet Y because transparent Sheet X lets light pass straight through, so the opaque cardboard blocks that light and produces a sharp shadow.
Explain why it is day on one side of the Earth while it is night on the opposite side of the Earth at the exact same time
It is day on one side of the Earth and night on the opposite side because the Sun lights only the half of the Earth facing it, while the other half is turned away in darkness.
ircle the circuit below that will successfully light up the bulb:
Circuit A: [Battery]----+----[Bulb]----+ (Open switch) Circuit B: [Battery]----+----[Bulb]----+ (Closed continuous wire) Circuit C: [Battery] +----[Bulb]----+ (Wire disconnected at battery)
B
Look at the table below showing four living things in a habitat:
Living Thing What it eats / Needs Plant A Sunlight, Water Insect B Plant A Bird C Insect B Frog D Insect B
If a disease kills all of Insect B, state how Bird C and Plant A will be affected.
There will be more Plant A as the insects are not eating them. There will be less Bird C because there are no Insect B's to eat.
Use the flowchart structure below to answer the question:
Is it used for building? ---> Yes ---> Is it a natural rock? ----> No -----> [ Rock X ]
Is it used for building? -----> No -----> Is it formed from lava? -----> Yes -----> [ Rock Y ]
Identify Rock X and Rock Y from these options: Concrete, Basalt, Chalk, Marble. [2]
Rock X = Concrete Rock Y = Basalt
A student mixes instant cocoa powder into cold water, but it leaves big lumps.
(a) Predict what happens to the rate of dissolving if warm water is used instead.
(b) State whether dissolving cocoa in water is a physical change or a chemical change.
it dissolves better and faster with hot water and its a physical change
Explain how light from a lamp allows a person to see an object in a dark room. Mention the path the light travels in your answer.
Light from the lamp travels in a straight line to the object, reflects off the object, and then travels to the person’s eyes, allowing them to see it.
Look at a simple circuit containing two batteries and one light bulb.
(a) If one battery is removed while keeping the circuit closed, what happens to the brightness of the bulb?
(b) Give a reason why placing two batteries facing positive-to-positive will prevent the circuit from working.
(a) The bulb becomes dimmer because removing one battery gives the circuit less voltage.
(b) The circuit will not work because placing batteries + to + cancels out their voltages, so no useful energy flows through the circuit.
Explain two distinct ways humans can protect a local garden environment without harming the food chains already existing there.
Pick up litter, Plant more plants, water the plants, dont pluck the plants, ect
A builder needs a material to pave an outdoor walkway that gets heavy foot traffic and rain. Compare limestone and concrete. Explain which material is better suited based on natural formation versus human-made durability.
Limstone isnt durable in rain. Concrete is long lasting
Look at the diagram setup:
Torchlight -----> Object X -----> Screen Y
If Object X is replaced with a semi-transparent material (frosted glass) that allows only some light to pass through, describe how the shadow cast on Screen Y changes compared to using solid cardboard.
the shadow becomes lighter.
An opaque wooden wall stands between a person and a blue ball on the floor. Explain why the person cannot see the blue ball, and describe what would happen to the light rays if the wooden wall were replaced with a clear glass window.
The person cannot see the blue ball because the opaque wooden wall blocks all light rays, so no light from the ball can reach the person’s eyes. If the wall is replaced with clear glass, the light rays from the ball would pass straight through the glass, allowing the person to see the ball.
A student sets up 3 circuits (A, B, C) to test components. Three of the circuits fail to light the bulb. Complete the troubleshooting table below by providing one specific reason for each failure:
A – The switch is open, so no electricity can flow.
B – The wire is broken, so the circuit is not complete.
C – The battery is backwards, so the bulb receives no correct voltage.