Victor 7th Grade Science Metric Measurement
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A Scientific Method is...
a way to solve a problem and search for an answer in an orderly and systematic way.
The basic steps to the scientific method are...
- - state the problem
- - gather background information for a hypothesis
- - design and perform experiment
- - record and analyze data
- - state a conclusion
Scientists use the metric system because it is bassed on units of _______?_________
ten which makes measurements easier and it is used world wide so data can be easily analyzed and communicated.
What is length?
By definition, length is the distance between 2 points.
What is the basic unit of length in the metric system?
The meter is the basic unit of length in the metric system.
What are the numbered lines on a meter stick are ___?_____
Centermeters (cm) are the numbered lines on a meter stick.
There are 100 centimeters in a meter.
A meter is slightly longer than a _____?_____
A meter is slightly longer than a yard.
What is the tool used to measue length in the _____?_____
The tool used to measure length is the metric ruler.
What is mass?
By definition, mass is the amount of matter in an object.
The basic unit of mass in the metric system is the ______?_____.
The basic unit of mass in the metric system is the gram.
What tool is used to measure mass?
The tool used to measur mass is the triple beam balance.
Mass and weight are not the same thing.
- Weight is the response of mass to the pull of gravity.
- Weight will change if you go to the moon, mass does not.
What measurement does the triple beam balance measure in?
The triple beam balance measures in grams (g).
What is volume?
Volume is the amount of space an object takes up.
What is the basic unit of volume in the metric system?
Liter is the basic unit of volume in the metric system.
What formula do you use to find the volume of a regular object?
- Length X Width X Height (cm3)
- is the formula used to find the volume of a regular object.
What method do you use to find the volume of an irregular object?
The displacement method is used to find the volume of an irregular object.
Volume of object = Final volume - Initial Volume
DON'T FORGET TO SUBTRACT!!!
What is density?
Density is the mass per unit volume of a substance.
Density is not weight or volume....
Density is a combination of both weight and volume.
The formula for density is mass divided by volume or
- D = M/V
- Density equals mass divided by volume.
What are the units for density?
The units for density are g/ml or g/cm3
What is the density of water?
Water has a density of 1g/ml.
Objects with a density of greater than 1g/mL will......
Objects with a density of greater than 1g/mL will......sink.
Objects with a density of less than 1g/mL will....
Objects with a density of less than 1g/mL will.... float.
Floating or sinking is based on _____?______
Floating or sinking is based on density NOT weight. Heavy things don't sink and light things don't float. (Remember the Port Jeff Ferry)
Is density constant for any substance or object?
Yes, density is constant for any substance or object.
Does density change with mass or volume?
NO. Density does not change with mass or volume.
What happens to the density of an object when you cut it in half?
When you cut an object in half, the density of an object will remain the same.
What is the meniscus of a liquid?
The meniscus of a liquid is the curve in the upper surface of a liquid close to the surface.
What is weight?
Weight is the force on the object due to gravity.
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