States of Matter
What is a solid?
A solid has a definite shape and volume.
Define static electricity.
Static electricity is the build-up of electric charge on the surface of objects.
What is the main function of the circulatory system?
The main function of the circulatory system is to transport blood, nutrients, and oxygen to cells and remove waste products.
What are the main functions of the respiratory system?
The main functions of the respiratory system are to take in oxygen and expel carbon dioxide.
What does sustainability mean?
Sustainability means meeting our own needs without compromising the ability of future generations to meet their needs.
What happens during condensation?
During condensation, a gas turns into a liquid when it cools down.
How does static electricity occur?
Static electricity occurs when electrons are transferred from one object to another, often through friction.
What are the roles of the capillaries and alveoli?
Capillaries connect arteries and veins and are where gas exchange occurs; alveoli are tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged.
Explain the gas exchange process in the lungs.
Gas exchange occurs in the lungs when oxygen from the air is absorbed into the blood and carbon dioxide is released from the blood into the lungs to be exhaled.
What happens when warm air sinks? Describe what you would see and feel.
When warm air sinks, it cools and may form clouds or cause a drop in temperature; you would feel a breeze and see trees moving.
Describe the characteristics of a gas.
Gases have no definite shape or volume, they expand to fill their container, and their particles are far apart and move freely.
Describe how magnets interact when brought close together.
Magnets can attract or repel each other depending on their poles; like poles repel, and opposite poles attract.
What is the role of arteries?
Arteries carry oxygen-rich blood away from the heart to the body.
How does the diaphragm function in breathing?
The diaphragm functions as a muscle that helps with breathing by contracting and moving down to create space for the lungs to expand.
What is the human enhanced greenhouse effect?
The human enhanced greenhouse effect refers to the increase in greenhouse gases due to human activities, leading to global warming.
What happens to water molecules when it freezes?
When water freezes, the molecules slow down and form a solid structure, expanding as they do so.
Explain how a circuit works.
A circuit works by allowing electricity to flow through a closed path, powered by a source like a battery.
What are the three main types of blood vessels, and what are their functions?
The three main types of blood vessels are arteries (carry oxygen-rich blood away from the heart), veins (carry oxygen-poor blood back to the heart), and capillaries (where the exchange of gases, nutrients, and waste occurs between blood and tissues).
Why is oxygen important for the body?
Oxygen is important for the body because it is needed for cellular respiration, which produces energy for cells.
List the layers of the atmosphere and one thing you could find in each layer.
The layers of the atmosphere include the troposphere (weather occurs), stratosphere (ozone layer), mesosphere (meteors burn up), thermosphere (northern lights), and exosphere (satellites).
Compare and contrast solids, liquids, and gases.
Solids have definite shape and volume, liquids have definite volume but take the shape of their container, and gases have neither definite shape nor volume.
What are two methods for generating static electricity?
Two methods for generating static electricity are rubbing two different materials together (friction) or using a generator.
How do the Respiratory and Circulatory Systems work together?
The Respiratory and Circulatory Systems work together by delivering oxygen from the lungs to the blood and removing carbon dioxide from the blood to the lungs for exhalation. The swap happens in the capillaries.
What are the parts of the respiratory system, and what role does each part play in breathing? (There are 8.)
What is the correlation between lightning and thunder?
he correlation between lightning and thunder is that lightning is the flash of light created by electricity (a channel opens) and thunder is the sound created by the rapid closure of the channel in the cloud.