True or False
Vocabulary
Mass Conservation
Interactions 1
Interactions 2
100
Magnets have magnetic energy
True
100
What is a closed system?
A system where nothing can enter or leave. Mass stays the same. Volume can change depending on the substances.
100
Is mass conserved in an open system?
No, in an open system mass can leave or enter
100
What kind of interaction is a child sliding down a slide?
Friction
100
What kind of interaction happens with a sailboat?
Drag - both the air and water
200
Energy usually increases in the source
False - Energy usually decreases in the source and increases in the receiver.
200
What is mass?
How much stuff is in something - how heavy it is
200
If mass isn't destroyed where does it go?
Mass can move. Example: when we mixed antacid tabs and water the chemical reaction turned some mass into gas which then left the cup.
200
When do you see stored elastic energy?
When something is squeezed or stretched
200
What is stored elastic energy?
Energy stored in the body. It is used to do work - push or pull something.
300
Einstein wrote 3 Laws of Motion
False - Newtons Law of Motion
300
What is volume?
How much space something takes up
300
What is a system?
More than one thing working together.
300
What are the 3 things you need for an electric-circuit interaction?
1. battery/cell 2. wires 3. bulb
300
Energy flows from the source to the _______
Receiver
400
We use grams to measure volume.
False - grams is mass. Volume can be mL or ounces.
400
What is an open system?
A system where things can move in or out. Mass changes and volume changes.
400
Does volume change in a closed system?
It can! It depends on what you mix - alcohol and water = volume changes vinegar and water = volume stays the same
400
What are the 4 types of mechanical interactions?
Friction, elastic, applied, drag
400
What is thermal energy?
Heat energy or the temperature of an object
500
Applied interactions are when one object is stretchy.
No stretchy objects have elastic interactions
500
What is resilience?
The ability to be strong and do your best, especially when things get hard
500
What is the Law of Conservation of Mass?
Mass is never created or destroyed.
500
What are the 6 kinds of interactions?
Mechanical, light, magnetic, electric circuit, electric charge
500
What kind of energy is transferred when you kick a ball?
Motion energy and stored chemical energy are transferred into stored elastic energy and motion energy
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