Year 4 Science Quiz

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1. Dolphins are mammals.

Explanation

Dolphins are mammals because they possess the characteristics that define mammals. They have mammary glands and nurse their young with milk, they have hair or fur at some point in their life cycle, and they give birth to live young instead of laying eggs. Additionally, dolphins are warm-blooded, have lungs and breathe air, and have a complex social structure, all of which are typical of mammals. Therefore, the statement "Dolphins are mammals" is true.

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About This Quiz
Year 4 Science Quiz - Quiz

This Year 4 Science Quiz covers basic zoology topics including animal classifications, characteristics of invertebrates, exoskeletons, and dietary habits of animals.

2. What do animals eat?
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3. Are humans producers or consumers?

Explanation

Humans are considered both producers and consumers. As producers, humans create goods and services through their labor and skills, contributing to the economy and society. They produce food, clothing, technology, art, and various other products. As consumers, humans utilize and consume these goods and services for their personal needs and desires. This dual role as both producers and consumers is a fundamental aspect of human economic behavior.

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4. What is an exoskeleton? 

Explanation

The correct answer is "A creatures hard outer shell, instead of a skeleton." This is because an exoskeleton refers to the external skeleton or hard outer covering that provides support and protection to certain animals, such as insects and crustaceans. It is not something that used to have a skeleton, as the exoskeleton is the current structure of these creatures.

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5. Classification is...

Explanation

The correct answer is sorting animals by similarities. Classification involves grouping animals based on common characteristics or traits to better understand their relationships and categorize them into different classes or categories. It is a way to organize and study the vast diversity of animal species, enabling scientists and educators to teach and communicate about them more effectively.

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6. To pollute  is to...

Explanation

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Dolphins are mammals.
What do animals eat?
Are humans producers or consumers?
What is an exoskeleton? 
Classification is...
To pollute  is to...
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