Key learning points

1. Objects can be classified based on their similarities and differences.
2. You can use a classification key to help decide which group something belongs to.
3. The questions on a classification key are layered, each answer leads to a new question.
4. Scientists use observable characteristics to identify unknown objects through a series of yes/no questions.
5. Scientists use classification keys based on observable characteristics.

Keywords

• Group - To group things is to put similar things together.

• Classification key - Classification keys are diagrams which help us identify objects using yes/no questions.

• Identify - To identify something is to be able to name it correctly.

• Yes/no questions - A yes/no question is a type of sentence that asks something and is answered with only yes or no.

• Observable characteristics - An observable characteristic is a feature or property of something that we can see or use our other senses to observe.

Common misconception