Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Length, mass and time are some of the ___________ physical quantities.
4.
One _________ is equal to the mass of a certain bar of platinum-iridium alloy that has been kept since 1889 at the International Bureau of Weights and Measures in Sèvres, France.
5.
All physical quantities have __________ units for the sake of uniformity.
Down:
1.
An __________ is a device used for indicating distance travelled by an automobile.