Year 9 Science · Unit 1 · Lesson 1

What Is Disease?

Foundation Worksheet

Name

Date

Class

Learning Goals

Classify diseases as infectious or non-infectious using defining features.
Define the terms: pathogen, infectious disease, non-infectious disease, disorder, and symptom.
Give examples of diseases from each major non-infectious category.

Warm Up

Sort it!

Write each disease from the pool into the correct category box below.

COVID-19 Type 2 diabetes Influenza Cystic fibrosis Malaria Skin cancer Tuberculosis Scurvy Ringworm Asthma

Infectious

Non-infectious

Your Turn

Match each term to its definition

Draw a line connecting each term on the left to its correct definition on the right. Or write the matching letter next to each term.

Term	Your answer	Definition
Pathogen		A. A physical or mental feature that indicates a condition of disease.
Infectious disease		B. A disturbance in the normal functioning of the body or mind.
Non-infectious disease		C. A disease caused by a pathogen that can spread from one host to another.
Disorder		D. A microorganism such as a bacterium, virus, fungus, or protist that causes disease.
Symptom		E. A disease that cannot be transmitted from one person to another, examples include genetic, lifestyle, and environmental conditions.

Show What You Know

1. State whether each of the following diseases is infectious or non-infectious, and give one reason for your answer: (a) influenza, (b) cystic fibrosis.

Recall 2 marks

2. Non-infectious diseases (NCDs) cause approximately 74% of all deaths worldwide. Name two categories of non-infectious disease and give one example of each.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?