Scientific Method
Levels of Classification
Characteristics of Life
Vocab
Challenge
100

This is typically the first step in the scientific method 

Making an observation

100

Anything that has mass and takes up space.

Matter

100

All living things are made of these.

Cells

100

A prediction of what will happen, often written as “if…then…”

Hypothesis

100

This step of the scientific method comes after forming a hypothesis and involves testing it.

Conducting an experiment

200

A testable explanation based on prior knowledge

Hypothesis


200

The smallest unit of an element that still retains its properties.

Atom

200

The genetic code that stores instructions for life.

DNA

200

A trait or condition that can change in an experiment.

Variable

200

What molecules make up water?

Hydrogen and oxygen 

300

The group in an experiment that does not receive the independent variable

Control group 

300

A substance made of two or more types of atoms chemically combined.

Molecule

300

The ability of organisms to keep a stable internal environment.

Homeostasis 

300

A scientific explanation that has been repeatedly confirmed through testing.

Theory 

300

The fact that all living things must maintain a relatively constant internal environment relates to this specific life process.

Homeostasis

400

This type of variable is the one that is measured.

Dependent variable

400

The classification level that is found inside a cell, or is what makes up cells 

Organelles 

400

Plants converting sunlight into energy is an example of this life function.

Energy use 

400

The amount of matter in an object.

Mass

400

In an experiment, a student tested plant growth with and without fertilizer. Plant growth (height in cm) is this type of variable.

Dependent variable

500

Scientists should _______ an experiment to see if results are consistent

Repeat

500

The level of matter organization that includes protons, neutrons, and electrons.

Subatomic particles

500

The process by which populations change over long periods of time.

Evolution

500

A plant growing towards sunlight demonstrates this characteristic of life 

Response to stimuli 

500

Parents can pass their DNA down to offspring. This is one of the reasons organisms can adapt and change with their environment. What characteristic of life does this describe?

Evolution