Chp 1 A Physics Toolkit - Concept Questions

The base SI unit for length is the _____ .

• foot

• inch

• meter

• kilogram

The metric prefix that means 1x10⁶ is _____ .

• pico

• mega

• nano

• giga

To avoid parallax errors, laboratory instruments should be read _____

• at eye level

• from the side

• below eye level

• at all of these positions

How many significant figure are in the measurement 2.560x10⁴?

• 1

• 2

• 3

• 4

A sample weighs 28.40 g. Which is the estimated digit?

• 2

• 8

• 4

• 0

In a scientific method, deductions are tested to find out whether they are valid.

• True

• False

The degree of exactness of a measurement is called accuracy.

• True

• False

Other scientists must be able to recreate an experiment and obtain similar data.

• True

• False

The last digit in any measurement is the significant figure.

• True

• False

All the zeros in 2,000,000 are significant.

• True

• False