Respiratory System
Digestive System
Nervous System
Circulatory System
All About Experiments
100

The primary function of the respiratory system.

What is taking in oxygen and getting rid of carbon dioxide?

100

The primary function of the digestive system.

What is absorb nutrients and get rid of waste?

100

The primary function of the nervous system.

What is send and receive signals between the brain and the body?

100

The primary function of the circulatory system.

What is transport oxygen, nutrients, and waste through the body?

100

The part of an experiment that remains unchanged. 

What is the control?

200

This part of the respiratory system is responsible for increasing the surface area of the lungs. 

What is the alveoli?

200

This part of the digestive system is where most chemical digestion occurs.

What is the stomach and intestines?

200

These nerve endings help with sensing touch and pressure.

What are touch receptors?

200

This is the part of the body that can be compared to a pump because it pumps blood throughout the body.

What is the heart?

200

This is how scientists collect evidence before creating an experiment. 

What is making observations?

300

This gas is released out of the body by the lungs.

What is carbon dioxide?

300

This process helps with breaking down food physically, usually through chewing, and helps speed up the other food breakdown process.

What is mechanical breakdown?

300

These are the nerves that are found in the spinal cord and brain.

What are the interneurons?

300

This is the main function of the capillaries.

What is carry oxygen and nutrients to every cell?

300

These are the things that affect the results of an experiment.

What are variables.

400

The levels of this gas increase after you exercise.

What is carbon dioxide?

400

This process helps with breaking down food through the use of digestive enzymes.

What is chemical breakdown?

400

These are the nerves that take in information from our world through our senses. 

What are sensory neurons?

400

This is the difference between the left and right sides of the heart.

What is the right side pumps deoxygenated blood to the lungs and the left side pumps oxygenated blood to the body?

400

This is what we have when there are benefits and risks in an experiment.

What is a trade-off?

500

These are the main parts of the respiratory system.

What is the nose, the mouth, the trachea, and the lungs?

500

These are the main parts of the digestive system.

What is the mouth, esophagus, stomach, small intestine, and large intestine?

500

This is the path traveled when someone experiences a touch.

What is to a sensory neuron, then to an interneuron, then to a motor neuron, and finally to a muscle? 

500

This is where the blood travels in the body.

What is the brain, stomach/intestines, liver, kidneys, leg muscles, lungs, and heart?

500

An experiment is testing if a new product makes hair grow faster by asking participants to share how often they get their haircut. The experiment shows that the more someone uses the product the sooner they need a haircut. 

This is the conclusion that can be made from these results. 

What is the product is successful at making hair grow faster?