1. Length and time

Question 1

What is used to measure length between 1mm and 1m?

Answer 1

A ruler, measures to nearest 1mm

Question 2

How do you measure the volume of an irregular shaped object?

Answer 2

Place it into a measuring cylinder full of water. This causes water level to rise and this this is equal to the volume of the object

Question 3

Vernier calipers measure to the nearest:

Answer 3

1/10mm eg 0.01 cm

Question 4

Micro screw gauge measure to the nearest:

Answer 4

1/100mm eg 0.001 cm

Question 5

What is used to measure time intervals?

Answer 5

Analog and digital clocks

Question 6

How can an average value for a small distance and for a small time interval be found?

Answer 6

By measuring multiples

Question 7

How can length measurements be made more accurate?

Answer 7

By measuring multiples such as thickness of 500 sheets than divide by 500 to find thickness of single sheet

Question 8

How can results/measurements be made more reliable?

Answer 8

By repeating it and if results similar it is reliable

Question 9

Define reliable:

Answer 9

How consistent results are

Question 10

Define accuracy:

Answer 10

How accurate it is, accurate without any error. How much of it is right or how close is it to known or acceptable value

Question 11

Define precise:

Answer 11

How reproducible measurements are even if they are far from accurate

Question 12

Define parallax error:

Answer 12

Perceived shifts in an objects position as it is viewed at different angles.

Question 13

How do you measure length of pendulum:

Answer 13

Measure to center of gravity, Take two measurements and average them, one from fixed end to beginning of bob and from fixed end of string to far end of bob

Question 14

How do yo measure volume of a regular shaped object?

Answer 14

Volume = Length x width x height

Question 15

To what degree of accuracy does a digital stop watch measure:

Answer 15

0.01 s