Matter & Its Interactions
This change of state happens when a solid turns directly into a gas, like dry ice.
What is sublimation
This force pulls objects toward Earth.
What is gravity?
These are the basic units of structure and function in all living things.
What are cells?
This gas makes up most of Earth’s atmosphere
What is nitrogen?
The first step in the engineering design process is identifying this.
What is the problem?
The number of protons in an atom determines this property.
What is the atomic number?
The formula speed=distancetime describes this type of motion.
What is average speed?
This organelle is known as the “powerhouse of the cell.
What is the mitochondrion?
The movement of tectonic plates is driven by these currents in the mantle.
What are convection currents?
Engineers build these small-scale versions to test ideas before full construction.
What are prototypes?
When two substances combine and form a new substance with new properties, this type of change has occurred.
What is a chemical change?
A push or pull on an object is known as this.
What is a force?
Plants make their own food using sunlight in this process.
What is photosynthesis?
This cycle describes how water moves through evaporation, condensation, and precipitation.
What is the water cycle?
A solution must meet these requirements to be considered successful.
What are criteria?
This law states that matter cannot be created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
Energy stored in an object due to its position is called this.
What is potential energy?
DNA is found inside this part of the cell.
What is the nucleus?
Rocks formed from cooled magma or lava belong to this category
What are igneous rocks?
Engineers must consider these limitations, such as cost or materials.
What are constraints?
The tendency of a substance to resist flowing is known by this term.
What is viscosity?
According to Newton’s Third Law, for every action there is one of these.
What is an equal and opposite reaction?
This type of cell division produces identical daughter cells for growth and repair.
What is mitosis?
The process by which carbon moves between the atmosphere, organisms, and Earth is known as this.
What is the carbon cycle?
This term describes improving a design based on test results.
What is optimization?