Measurement Review

Measurement Review

All investigations require some type of measurement.

Measurement Review

All investigations require some type of measurement.What are some examples?

Measurement Review

All investigations require some type of measurement.What are some examples?

Measurement Review

All measurements can be divided into two types: Qualitative

Measurement Review

All measurements can be divided into two types: Qualitative- this is an approximate

measure.An example would be it is REALLY heavy

Measurement Review

All measurements can be divided into two types: Qualitative- this is an approximate

measure.An example would be it is REALLY heavy Quantitative- states a specific quantity or

amount.For example, it has a mass of 15.90 kilograms

Measurement Review

What is the big deal with the metric system?

Measurement Review

What is the big deal with the metric system?

Why is it better than the English system?

Measurement Review

What is the big deal with the metric system?

Why is it better than the English system?

Convenience and Adaptability

Measurement Review

Convert 5 miles to inches

Measurement Review

Convert 5 miles to inches

5 miles X 5,280 feet X 12 inches =316800

Measurement Review

Convert 5 miles to inches

5 miles X 5,280 feet X 12 inches =316800

Convert 5 kilometers to millimeters

Measurement Review

Convert 5 miles to inches

5 miles X 5,280 feet/miles X 12 inches/foot =316800 inches

Convert 5 kilometers to millimeters5 kilograms = 5,000,000 millimeters

Measurement Review

What do you do if you require a measurement that is less than 1 inch? 1 once?

Measurement Review

What do you do if you require a measurement that is less than 1 inch? 1 once?

Fractions

Measurement Review

Measurement Review

In the metric system, all base quantities use the same prefixes to denote magnitude.

Base Units:Grams-mass

Measurement Review

In the metric system, all base quantities use the same prefixes to denote magnitude.

Base Units:Grams-mass

Meters-length

Measurement Review

In the metric system, all base quantities use the same prefixes to denote magnitude.

Base Units:Grams-mass

Meters-lengthLiters-volume

Measurement Review

Metric Prefixes

Kilo hecto deka I deci centi milliMeterLiter

Gram

Measurement Review

What about units smaller than a milli and larger than a kilo?

Measurement Review

Giga Nano

Tools

There are many instruments which aid in scientific investigation.1) The microscope

Tools

There are many instruments which aid in scientific investigation.1) The microscope allows images to be magnified. There are two main types:

The Light Microscope

Tools

There are many instruments which aid in scientific investigation.1) The microscope allows images to be magnified. There are two main types:

The Light MicroscopeThe Electron Microscope

Tools

Light Microscope Image

Tools

• Light Microscope typically measures at the level of a micrometer

• Can be used to observe living organisms• Uses light for illumination

Tools

Electron Microscope Image

Tools

• Electron Microscope measures at the level of the nanometer

• Only dead organism can be viewed• Uses electrons for illumination

Tools

Centrifuge is used to separate parts of a cell in a technique known as cell fractionation.

Tools

Centrifuge is used to separate parts of a cell in a technique known as cell fractionation.

1) Cells are broken up by a blender

Tools

Centrifuge is used to separate parts of a cell in a technique known as cell fractionation.

1) Cells are broken up by a blender2) Spun at 20,000 times per minute causing organelles to separate based on density and size.

Tools

Tools

Tools

Blender Ultracentrifuge

Tools

Cell Culture is a technique where single cells isolated from an organ can be grown and studied.

Tools

Cell Culture Lab Cell Culture Flask

Review

1. Why is the metric system so useful to scientists?

Review

1. Why is the metric system so useful to scientists?

2. What type of microscope uses micrometers for measurement?

Review

1. Why is the metric system so useful to scientists?

2. What type of microscope uses micrometers for measurement?

3. What is cell fractionation?