Science Primary 4 First Semester Quiz

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Questions and Answers

What is the primary function of bones in the human body?

To produce energy

To absorb nutrients

To give our body shape and keep us upright (correct)

To provide warmth

Which part of the body is responsible for connecting the leg to the upper body?

Rib cage

Hip (correct)

Spine

Skull

What term describes the hard skins or shells found outside some invertebrates?

Scaffold

Skeleton

Frame

Exoskeleton (correct)

What is the definition of an infectious disease?

A disease caused by germs Signup and view all the answers

What does the term 'contract' refer to in relation to muscles?

Muscles getting shorter and fatter Signup and view all the answers

Which of the following best defines 'organs' within the body?

Parts that have different jobs within the body Signup and view all the answers

What role do vaccinations play in our health?

They prevent diseases Signup and view all the answers

What is the function of the rib cage in humans?

To protect the heart and lungs Signup and view all the answers

What does the term 'predict' mean in a scientific context?

To say what you think will happen based on prior knowledge or observations Signup and view all the answers

Which of the following accurately defines 'predator'?

An animal that kills and eats other animals Signup and view all the answers

What is a 'food chain' primarily used to illustrate?

The order in which animals consume plants and other animals Signup and view all the answers

What happens during the process of melting?

A solid changes to become a liquid Signup and view all the answers

What is meant by 'energy transfer'?

The movement of energy from one place or object to another Signup and view all the answers

Which of the following best describes a 'consumer'?

Any living entity that obtains energy by consuming other living things Signup and view all the answers

What does 'change of state' refer to?

The physical transformation of materials from one form to another Signup and view all the answers

Which of the following animals would be classified as an omnivore?

A bear that eats both plants and other animals Signup and view all the answers

Study Notes

Skeleton and Bones

Bones are hard and strong, providing shape and support for the body.
The skeleton is a frame made of bones that gives structure and protects vital organs.
Key bones include the skull (head), spine (back), rib cage (chest), hip (connection between leg and body), and jaw (movable bone for eating and talking).

Muscles and Movement

Muscles are attached to bones and enable movement through contraction (shortening and thickening) and relaxation (lengthening and thinning).
Muscles feel different based on their state; hard when contracted and soft when relaxed.

Body Functions and Protection

Organs perform various jobs within the body; protection is provided by bones and other structures to keep safe from harm.
Vaccinations and medicines help prevent or treat infectious diseases caused by germs.

Energy and Its Transfer

Energy is essential for causing movement or actions and can transfer from one object or place to another.
Electrical appliances use electrical energy to function, illustrating a specific form of energy in daily life.

Food and Ecosystem Dynamics

The food chain illustrates energy flow, showing relationships among producers (plants), consumers (animals), and their dietary classifications: herbivores (plant-eaters), carnivores (meat-eaters), and omnivores (eat both).
The predator-prey relationship is critical; predators kill and eat prey to obtain energy.

Comparison and Properties of Materials

Comparing involves examining similarities and differences between items or concepts.
Materials have distinct properties, such as hardness in rocks or elasticity, affecting their behavior and use.

Matter and Changes

Matter exists in different forms: solids, liquids, and gases, each identifiable by specific properties.
A change of state occurs when matter transitions between forms due to heating (e.g., melting of solids to liquids) or cooling.

General Concepts

Germs are tiny organisms that can cause illness and infect the body, leading to diseases.
Instructions guide actions, such as assembling models or executing scientific investigations.
Understanding functions and characteristics is vital for grasping how various systems and processes work.

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Description

This quiz covers key vocabulary related to human anatomy for Primary 4 science. Students will explore terminology such as bones, frame, hip, jaw, and model, which are essential for understanding how our bodies work. Prepare to test your knowledge on these fundamental concepts.