Biology: Chapter 2; Scientific Notation and the Metric System

Scientific notation is a way of expressing

1. Extremely small numbers

2. Extremely large numbers

3. numbers that have many zeros

4. all of the above

For the number 4.5 × 10^6, which represents the base?

10

For the number 6.8 × 10^6, the 7 is called the

exponent

When multiplying numbers written in scientific notation, you should ___ the exponents.

add

When adding and subtracting numbers written in scientific notation, all the numbers should be converted to the same _______ value.

exponent

The metric prefix “kilo” means

thousand

Which of the following metric units is used to express luminous intensity?

Candela

The cubic centimeter is a unit used to express

volume

What is the symbol for centimeter?

cm

Which county commonly uses the English system rather than the metric system?

United States

The earth is 93 million miles from the sub. What is the number in scientific notation?

9.3 × 10^7

What is the number 4.85 × 10^5 in standard notation?

485000

How many millimeters are in 1 centimeter?

10

Converting between metric units is easier than converting between English units because you only need to

move the decimal point

When reading a graduated cylinder, you should read the meniscus, which is the ___ of the curve

bottom

Which of the following instruments is used in the lab to distribute and extract precise amounts of liquid.

pipette

In the metric system, the basic unit of linear measurement is the ____.

meter

Which of the following is the most accurate for measuring volumes?

Graduated Cylinder

Which of the following units is commonly used to measure microscopic objects?

Nanometer

Water freezes at 32 degrees Fahrenheit. Convert this value to degrees Celsius.

0

What is the basic unit of volume in the metric system?

Liter

To convert 1.0 micrometers to millimeters, you would move the decimal point _____.

two spaces to the left

Before adding numbers written in scientific notation, you may need to ___ so that all the numbers have the same exponent value.

move the decimal point of the coefficient

Add the following number 6.5 × 10^8 + 4.2 × 10^7

6.92 × 10^8

Subtract 4.0 × 10^6 - 2.5 × 10^6

1.5 × 10^6

Multiply 8.2 × 10^4 x 2.5 × 10²

20.5 × 10^6

Two inches equals _____ cm.

5.08

Divide 8.0 × 10^6 / 2.0 × 10³

4.0 × 10³

3 miles is ___ km?

4.8 bc 1km = 0.621 m

Weighs 160 on earth then how much on the moon, where the gravitational force is reduced, he would ____.

have the same mass