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💯PSLE Science Exams' Preparation

✅️Pri 3 to PSLE Science

📝Free learning resources, videos, PDFs, quizzes and more !
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Which form of energy is present in a stretched rubber band?
Anonymous Quiz
20%
Kinetic energy
4%
Heat energy
76%
Potential energy
0%
Sound energy
👍1
What will happen when an object is dropped in water and it is denser than water?
Anonymous Quiz
83%
The object will sink.
2%
The object will dissolve.
14%
The object will float.
0%
The object will remain suspended
Which of the following processes involves a change of state from gas to liquid?
Anonymous Quiz
2%
Melting
0%
Freezing
15%
Evaporation
83%
Condensation
Which organ removes waste products from the blood in humans?
Anonymous Quiz
13%
Heart
29%
Liver
48%
Kidneys
10%
Stomach
Which of the following objects is translucent?
Anonymous Quiz
9%
Mirror
23%
Plastic sheet
64%
Frosted glass
4%
Aluminum foil
Which material is a good conductor of electricity?
Anonymous Quiz
7%
Rubber
0%
Plastic
2%
Wood
91%
Copper
Which part of the plant produces food through photosynthesis?
Anonymous Quiz
8%
Roots
6%
Stem
80%
Leaves
6%
Flowers
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Which of the following are found in all plants?
 
           A) Fruits            B) leaves            C) stems            D) roots
Anonymous Quiz
3%
A and B only
5%
A, C and D only
70%
B, C and D only
21%
A, B, C and D
👏2
David went fishing at the river.
Danny wanted to find out how the amount of light a seedling gets affects the number of days the seedling takes to grow taller by 10cm. He prepared three similar seedlings and conducted an experiment with them.
Option 1 is a changed variable. All the 3 seedlings should get the different amount of light.

The measured variable is something we measure to know the results of the experiment. - the number of days the seedling takes to grow taller than 10cm.
So it is option 4

Option 2 and 3 are fixed variables. All the seedlings should get the same amount of water and should be the same size to ensure a fair test
Sue Mei used a plastic fork on her food and one of the prongs of the fork broke. Her father suggested she should use a metal fork instead.