Show:
Matter
Measuring Matter
Scientific Tools
Force and Motion
Wild Card
100
What are the three states of matter?
Solid, Liquid, and Gas
100
What is the formula for density?
density= mass / volume
100
What is a metric ruler used to measure?
length, width, height, and/or volume
100
What is Newton's First Law of Motion?
Law of interia- an object at rest remains at rest; and object in motion stays in motion
100
What is water displacement?
The method used to measure the volume of a solid object in a graduated clylinder
200
What is the law of conservation of mass?
the idea that mass cannot be created or destroyed in a closed system
200
What is density?
The amount of matter in a given space. More dense object sink; less dense objects float
200
What is a graduated cylinder used to measure?
Volume of liquids and solids
200
What is Newton's Second Law of Motion?
The acceleration of an object depends on the mass of the object and the size of the net force. (acceleration=force / mass)
200
What is the difference between physical and chemical properties?
Physical Properties are properties that can be observe without changing the material (ex. size, color, shape). Chemical Properties are properties that can only be observed by changing the materials (ex. flammibility and reactivity)
300
What happens to the molecules in a material, when materials are heated
molecules begin to move more quickly; may change states
300
What is the difference between mass and weight?
Mass is the amount of matter in an object. Mass does not change. AND Weight is the amount of gravitational pull on an object. Weight changes depending on location.
300
What is a triple-beam balance used to measure?
Mass
300
What is Newton's Third Law of Motion?
When a force is applied to an object, the object exerts an equal force in the opposite direction
300
What is the difference between physical and chemical changes?
Physical changes do not create a new substance (ex. cutting paper and breaking glass). Chemical changes create a new substance (ex. burning paper; gas created by mixing vinegar and baking soda)
400
What happens to the molecules of a material, when the material is cooled?
The molecules slow down; may change states
400
What is a closed system?
a system that contains substances for measuring purposes
400
What is a spring scale used to measure?
weight (gravitational pull)
400
What is the formula to calculate speed?
speed= distance / time
400
What is a pure substance?
a substance made up of the same element/atom (Examples: Oxygen, Iron, Titanium, Hellum)
500
What causes substances to change states?
adding or taking away heat
500
If wood floats in water and gold sinks in water, what does this suggest about the wood and the gold?
The wood is less dense than the water; The gold is more dense than the water; The wood is less dense than the gold; The gold is more dense than the wood
500
What is a balance scale used to measure?
mass
500
What is the difference between speed and velocity?
speed is how fast an object is moving AND velocity is how fast an object in moving in a specific direction
500
What is erosion?
the wearing away of the land by wind and water flow