(a) What is the expected result? (b) Why is it necessary to keep both plants in the same temperature?
(a) Converted to heat and sound energy. (b) Kinetic energy.
(a) What is this rapid growth of algae called? (b) Explain how this affects fish in the river.
(a) Name the process that caused the water droplets. (b) State one condition needed for this process to occur. psle 2012 science questions and answers
Which of the following is an example of a chemical change? A) Melting butter B) Frying an egg C) Dissolving sugar in water D) Tearing paper
B) Frying an egg Explanation: Frying an egg causes denaturation of proteins 窶� a new substance is formed, irreversible.
The diagram shows a food web: Grass 竊� Grasshopper 竊� Frog 竊� Snake 竊� Eagle (a) What is the expected result
A student builds two circuits. Circuit A has one bulb and one battery. Circuit B has the same bulb but two batteries connected in series.
(a) How does the thick stem help the cactus survive? (b) Why are there spines instead of broad leaves?
(a) Photosynthesis 窶� produces oxygen. (b) Carbon dioxide. (b) Kinetic energy
(a) Producer. (b) Grasshopper population will increase initially because there are no frogs to eat them.
(a) No sunlight 竊� no chlorophyll produced. (b) Food stored in the seed (cotyledons).
C) Magnetic force
(a) It has become a temporary magnet. (b) Magnetisation by stroking.