Rivervale Primary
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Term 3 Week 1 - 5​
P6 Quiz
Answers to previous quizzes
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A) Object C. The compression of the spring was the greatest.
B) Gravitational force and elastic spring force.
Answer:
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If the box does not move, it means that the force exerted by the man is equal to or smaller than the frictional force. For the box to move, the amount of force he exerts on the box must be able to overcome the friction between the box and the floor.
Answer:
When the population of C increases, the population of B would decrease as C preys on B. When that happens, the population of D would decrease as it would have lesser prey to feed on as it also feeds on B.
Question:
Study the food web below carefully
What would happen to the populations of B and D if C becomes extinct?
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Answer:
The population of D would increase as there would be no more predators feeding on it. The population of B would decrease as it would have less food.
Question:
The picture below shows a crocodile stalking its prey.
Animals such as deers have to be very careful when they are drinking from the edge of rivers where crocodiles live. Based on the picture above, explain the adaptation that makes it difficult for its prey to notice the crocodile.
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Answer:
The crocodile is the same colour as the water. Therefore, it is camouflaged in the water and the prey is not able to see it.
Question:
A habitat gives a species what it needs to survive. For example, a forest gives a bird shelter from bad weather. State two things that a habitat provides to a species for it to survive.
​Answer:
Habitats provide food such as plants or animals that other animals need to eat; provide water for plants and animals; provide sunlight and space for plants to grow and provide shelter.