Matter
The smallest unit of matter that defines the chemical element.
What are atoms?
The changing of energy from one form to another.
What is energy transformation?
Constant fluctuations that travel through space (either in the vacuum of outer space or through matter), transferring energy
What are waves?
The length and direction of a straight line between two locations, or positions.
What is Displacement?
Hydrogen peroxide forming bubbles on its own is an example of…
What is matter breaking down into two substances?
The energy stored in a ball sitting at the top of a ramp is…
What is all potential energy?
They are made of living microorganisms and improve food digestion and absorption of nutrients.
What are two facts about probiotics?
When two or more forces act on an object but the object’s velocity does not change, the object is being acted on by…
What is a balanced forces?
Investigation: Add a small amount of solid to a liquid in a beaker.
Observation: The solid dissolves in the liquid.
What is an investigation that will help the student explore a physical property of matter?
The movement of heat through an object vs. the movement of heat through fluids and gases.
What is conduction vs. convection?
Plant cells do not have chloroplasts, but animal cells do.
What are differences between a plant cell and an animal cell that can be determined by looking at the parts inside the cell?
Energy transformation causes the blades of an electric fan to move when an electric fan is turned on.
What is electricity to motion?
You inflate a balloon with helium. The balloon feels stiff. Which properties of a gas BEST explain this observation?
The particles are moving quickly and are far apart.
Does not require any form of matter to move through, as conduction and convection require.
What is thermal radiation?
Remains unchanged when a sound wave travels from the air to water.
What is frequency?
Two equal forces act at the same time on the same stationary object, but in opposite directions.
Which statement describes the object’s resulting motion?
What is the object will remain stationary.
A teacher boils clear liquids in two beakers. Afterward, Beaker A has a white powder left in it, but Beaker B is empty. The teacher states that one beaker contained only water while the other beaker contained salt water. Student 1 reaches the conclusion that Beaker A contained a mixture whereas Beaker B contained a pure substance. Student 2 reaches the conclusion that Beaker A held only water while Beaker B held salt water. Which student’s conclusion is MOST LIKELY correct?
Student 1 is correct, while Student 2 is incorrect.
A student plans an experiment to test the Law of Conservation of Energy. The student sets up a pendulum and hypothesizes that the pendulum will not stop. The student finds that the pendulum eventually slows down and stops.
Explain these results in terms of the Law of Conservation of Energy.
What is the pendulum stopped due to friction, and according to the Law of Conservation of Energy, no energy is lost, just changed from potential energy to thermal energy.
Caused by a disturbance or vibration that causes the molecules in matter to bump into each other and transfer the energy from one molecule to the next in a set direction.
What are mechanical waves?
Quantity that measures the rate at which an object changes its velocity.
What is acceleration?