Matter
This is the smallest unit of an element.
What is an atom?
This planet is known as the Red Planet.
What is Mars?
Animals that eat only plants are called this.
What are herbivores?
This is a guess you can test in an experiment.
What is a hypothesis?
These are white, puffy clouds that look like cotton balls.
What are cumulus clouds?
This state of matter has a definite shape and volume.
What is a solid?
The moon’s light is actually a reflection of this.
What is the Sun?
This is the process plants use to make their own food.
What is photosynthesis?
The steps scientists use to solve problems are called this.
What is the scientific method?
This is the blanket of gases around Earth.
What is the atmosphere?
This happens when a solid turns directly into a gas.
What is sublimation?
This layer of Earth is made of liquid metal.
What is the outer core?
These carry messages throughout your body.
What are nerves?
This is the variable that you change in an experiment.
What is the independent variable?
The tool used to measure temperature.
What is a thermometer?
This property tells us how heavy something is for its size.
What is density?
Earth takes this long to orbit the Sun once.
What is one year?
These are the basic building blocks of all living things.
What are cells?
A tool used to magnify tiny things.
What is a microscope?
A storm with lightning and thunder is called this.
What is a thunderstorm?
A change that creates a new substance is called this.
What is a chemical change?
These sudden movements can shake the Earth's surface.
What are earthquakes?
The five main life processes are movement, respiration, sensitivity, growth, and this.
What is reproduction?
This kind of chart shows how data changes over time.
What is a line graph?
This is the average weather in a place over a long time.
What is climate?