What is the most basic substance that make up matter?
elements
100
What property used to measure an object deals with gravity?
weight
100
When water freezes, it will expand or condense?
expand
100
What is the gas form of water?
water vapor
100
Give three examples of a simple machine?
wheel and axle, lever, inclined plane, pulley, screw or wedge
200
The physical property that describes the amount a solid material will stretch
elasticity
200
Which stays the same? mass or weight. Give one example
mass. Weight depends on gravitational pull. An astronaut on the moon would have the same mass as on Earth, but not the same weight because there is less gravity on the moon.
200
What is plasma?
state of matter made of electrically charged particles
200
A change in the state of matter is called__
a physical change
200
What is a compound machine? Give one example.
Made of two or more simple machines. Bicycle, more
300
The amount of space something takes up is called
volume
300
Which state of matter can easily change shape? gas or solid
gas
300
Which state of matter has more kinetic energy?
plasma
300
When a liquid changes to a gas it is called ___
evaporation
300
When you are shooting a basketball, when do you have the most potential energy?
at the top of the arch before it enters the basket
400
What is formula to calculate Density?
Density = mass/volume
400
A gas will expand to fill its container, so this is the property of ____
volume
400
What is kinetic energy?
energy of movement
400
When a metal door is heated and hard to open, what happens to its particles?
they expand
400
When you swing a hammer, what type of energy does the hammer have before it hits the nail?
kinetic - energy of movement
500
What is mass?
the amount of matter in something
500
When an object that is placed in water and sinks to the bottom, the water will move or be displaced. Why?
It has a larger volume than water
500
Which state of matter has particles that are closely packed?
solid
500
The particles in an object with move more quickly when ___ is added.
heat
500
What is force? Give two examples of force.
push or a pull on an object - gravity, electricity, magnetism, engine, a person