Energy and Matter
These tiny particles make up all matter.
What are atoms?
A characteristic that can be observed without changing the substance.
What is a physical property?
The speed and direction of an object describes this.
What is velocity?
The distance from one wave crest to the next.
What is wavelength?
Organisms that make their own food through photosynthesis.
What are producers?
This state of matter has a definite shape and volume.
What is a solid?
A change that produces one or more new substances.
What is a chemical change?
This force pulls objects toward each other.
What is gravity?
This type of wave needs a medium to travel through.
What is a mechanical wave?
This shows how energy flows from one organism to another.
What is a food chain?
The movement of thermal energy from a hotter object to a cooler one.
What is heat transfer?
A chemical reaction that absorbs energy is called this.
What is endothermic?
A pair of forces acting on two interacting objects.
What is an action-reaction force pair?
What is refraction?
This process breaks down glucose for energy in cells.
What is cellular respiration?
This is the process of heat transfer through direct contact.
What is conduction?
The number of protons in an atom determines this.
What is the atomic number?
The energy of motion is called this.
What is kinetic energy?
White light is made of these.
What are all colors of the visible spectrum?
This continuous movement of elements like carbon or nitrogen through ecosystems.
What is the cycling of matter?
Increasing this causes particles in a substance to move faster.
What is temperature?
The ability of a substance to react with acid is an example of this kind of property?
What is a chemical property?
A circuit that provides one path for electricity to flow is called this.
What is a series circuit?
This kind of signal is used in most modern digital communications.
What is a digital signal?
The variety of life in an ecosystem is called this.
What is biodiversity?