Measurement And Units 2 Flashcards
What do we use to measure time
Stopwatch, timer, clock
What do we use to measure length, distance and height
- Metre stick
- trundle wheel
- opisometer (maps)
- callipers and micrometers
What part of the miniscus do we measure
The bottom
What is area
The amount of space inside a 2D shape
Area of a rectangular shape
Length x width
Area of a circle
Radius squared x pi (3.14)
Area of a triangle
1/2 base x perpendicular height
What is volume
The amount of space that a 3D shape occupies
Volume of a cuboid
Length x width x height
Volume of a liquid
Use a graduated cylinder
Volume of an irregular shape
Water displacement:
- measure the water in a graduated cylinder
- place object on the graduated cylinder
- measure how much the volume of the water has gone up on the side of the graduated cylinder
What is mass
The amount of material in an object
What is temperature
The measure of the heat energy of an object
How do we measure the density of something
Density = mass/volume
