Bubbling, smoking, & temperature change are signs of this.
What is a chemical reaction?
100
Always moves from highest to lowest...
How does heat (thermal) energy transfer?
100
A ball is thrown straight up into the air. What happens to the ball's speed as it goes up and as it comes down?
The ball moves slower and slower as it goes up, stops, and then moves faster and faster as it comes down.
200
Is air matter? Why?
Yes, air is matter because it is made up of atoms (particles) and has mass.
200
The variable that you change.
What is a manipulated variable?
200
When a chemical reaction happens, the product(s) can contain less matter than the reactants (true or false).
False, the product(s) must contain the same number of atoms as were put into the reaction (reactants).
200
Truth or Fiction: Liquid water has more thermal energy than solid (ice) water. Why?
True, liquid water has more thermal (heat) energy than water ice does because its particles are moving faster, therefore have more energy.
200
What is a force that pushes/acts against objects and slows them down.
What is friction?
300
In which form of matter are the molecules spaced closest together? What is a form of matter that holds its own shape?
What is a solid?
300
The quantity measured, the amount observed.
What is a quantitative observation?
300
A new substance that can be a solid, liquid, or gas is always a product of this.
What is a chemical reaction?
300
When energy moves from one form to another.
What is an energy transformation?
300
A rubber band is shot across the room. At what point is the band's potential energy the greatest?
Its elastic potential energy is greatest just before it is released.
400
Atoms are not matter but they are contained in matter (true or false?).
It is false that atoms are not matter. They are matter because they have mass.
400
Can be stated: "How will ______ affect ______?"
What is an Investigative or Scientific Question?
400
Life on earth, driven by chemical reactions, could not live without this substance (nutrient).
What is water?
400
When energy moves from one location to another.
What is an energy transfer?
400
A student is playing with a pendulum. She gives the ball a push and watches it swing from side to side. Why does the ball eventually stop swinging?
The motion energy is transferred elsewhere (to the air).
500
An earth object is taken to the moon. Is its mass different on the moon?
No, an object's mass would be the same on earth and the moon. It would WEIGH less on the moon because there is less gravitational pull.
500
Can be stated: "If ________, then __________ because______."
What is a hypothesis?
500
This chemical reaction makes energy for all producer organisms.
What is photosynthesis?
500
What energy transformations happen when a skateboarder goes down a hill?
Gravitational potential energy is transformed into motion energy (kinetic energy) and thermal energy (due to friction).
500
A student is playing with a pendulum. She gives the ball a push and watches it swing from side to side. Why does the ball swing for a long time before it stops?