Science · Fourth Grade, Primary · Unit 4: Diseases and Infections · First Semester
A 10-question quiz; after every question you'll see the right answer with an explanation.
Earn 5 points for every new star.
No account? Create one for free
A disease is a condition that keeps the body from working normally. Some diseases are caused by tiny germs, and some do not spread from person to person. In this lesson you tell infectious and noninfectious diseases apart and learn what causes them.
💡 Tip: A common mistake: thinking every disease spreads by infection. Diabetes and tooth decay are noninfectious diseases, while the flu and the common cold are infectious and caused by viruses.
Ghada explains the lesson and answers your questions about it. Log in to get started.
An infectious disease is caused by germs and spreads from one person to another, such as the flu. A noninfectious disease does not spread through contact, such as diabetes and asthma.
Both are tiny germs that can only be seen with a microscope. Bacteria are single-celled living things, and some of them are helpful, while viruses are much smaller and can only reproduce inside the cells of another living thing.
Start the lesson quiz on Study with Ghada: 10 questions from the Science Fourth Grade, Primary question bank. After each answer you'll see the right answer with an explanation, and any questions you miss move to “Review my mistakes” until you master them.
Yes, completely free. They're built on the Science - Grade 4 - Semester 1 lessons in the same order as the book, and every question is reviewed and approved by a teacher before students see it.
