Standards for Measurement

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Presentation transcript:

Standards for Measurement

Force The amount of push or pull on an object. Unit = Newton (N). Use a spring scale.

Weight The amount of pull on an object based on gravity. Unit = Newton (N) b/c gravity is a kind of force. Use a spring scale

Mass The amount of matter an object is made of. Unit = gram (g). Use a triple beam balance. http://www.flickr.com/photos/40964293@N07/5032217344/

Which has a greater mass? Which has a greater weight?

So what’s the difference between mass and weight?

Length The amount of distance an object is or travels. Unit = meter (m). Use a ruler. To get AREA, multiply length X width (answer is units square)

Volume The amount of space an object takes up. Unit = liter (L). Use a graduated cylinder or ruler.

To Get Volume Measure length, width and height then multiply. Answer is units cubed. http://www.flickr.com/photos/nataliejohnson/2920298000/

Practice Some boxes in a warehouse all have a length of 30 cm, a width of 30 cm and a height of 20 cm. What is the volume of each box?

Temperature The amount of molecular motion in an object. Molecular motion ↑, temperature ↑ Molecular motion ↓, temperature ↓ Unit = Celsius scale (°C) Use a thermometer http://www.flickr.com/photos/samcatchesides/3613447405/