Praktická cvičení z fyziky
Anglická verze
Time
Try to estimate 1 minute.
Stand and after 1 minute sit down.
Try to use a stopwatch – to start, to stop, to clean
Try to measure time by stopwatch.
Measure time of doing 10 squats.
Measure how fast you are able to press the stopwatch twice. This is a reaction time.
How was time measured in the past? Look at models of hourglass, candle clock, water clock.
Temperature
Put your hand into a bowl with cold and than lukewarm water.
Than put another hand into a bowl with hot and than lukewarm water.
Thermal expansivity – this is a basis of the measurement of temperature
Put an airball on the top of a glass bottle. Put the bottle to the pot with hot water. What is
going on?
Prepare the bottle with colored water and a narrow small tube in the middle. Put the bottle
into the pot with hot water. What is going on?
Put warm bimetal belt in the flame of a candle. What is going on? Why?
Do you know some interesting points on the scale of a temperature?
Volume
Look at these graduated cylinders. What did you notice?
Look at a measuring jug. Why it has a scale for sugar, flour etc.?
How do you find out the volume of a regular object?
How do you mesure the volume of an irregular object?
How do you find out the volume of an object too big for putting in the graduated cylinder?
Length
Do you know units for measurement of length now and in the past?
Czech fathom
Czech palm
Czech fist
Czech span
Viennese elbow
Prag elbow
Czech foot
Yard