Study the map, and then answer the questions using

velikii [3]

Answer:

Scientific notation is the way that scientists easily handle very large numbers or very small numbers. For example, instead of writing 0.0000000056, we write 5.6 x 10-9. So, how does this work?

We can think of 5.6 x 10-9 as the product of two numbers: 5.6 (the digit term) and 10-9 (the exponential term).

Here are some examples of scientific notation.

10000 = 1 x 104 24327 = 2.4327 x 104

1000 = 1 x 103 7354 = 7.354 x 103

100 = 1 x 102 482 = 4.82 x 102

10 = 1 x 101 89 = 8.9 x 101 (not usually done)

1 = 100

1/10 = 0.1 = 1 x 10-1 0.32 = 3.2 x 10-1 (not usually done)

1/100 = 0.01 = 1 x 10-2 0.053 = 5.3 x 10-2

1/1000 = 0.001 = 1 x 10-3 0.0078 = 7.8 x 10-3

1/10000 = 0.0001 = 1 x 10-4 0.00044 = 4.4 x 10-4

As you can see, the exponent of 10 is the number of places the decimal point must be shifted to give the number in long form. A positive exponent shows that the decimal point is shifted that number of places to the right. A negative exponent shows that the decimal point is shifted that number of places to the left.

In scientific notation, the digit term indicates the number of significant figures in the number. The exponential term only places the decimal point. As an example,

46600000 = 4.66 x 107

This number only has 3 significant figures. The zeros are not significant; they are only holding a place. As another example,

0.00053 = 5.3 x 10-4

This number has 2 significant figures. The zeros are only place holders.

How to do calculations:

On your scientific calculator:

Make sure that the number in scientific notation is put into your calculator correctly.

Read the directions for your particular calculator. For inexpensive scientific calculators:

Punch the number (the digit number) into your calculator.

Push the EE or EXP button. Do NOT use the x (times) button!!

Enter the exponent number. Use the +/- button to change its sign.

Voila! Treat this number normally in all subsequent calculations.

To check yourself, multiply 6.0 x 105 times 4.0 x 103 on your calculator. Your answer should be 2.4 x 109.

On your cheap non-scientific calculator:

You will need to be familiar with exponents since your calculator cannot take care of them for you. For an introduction to rules concerning exponents, see the section on Manipulation of Exponents.

Addition and Subtraction:

All numbers are converted to the same power of 10, and the digit terms are added or subtracted.

Example: (4.215 x 10-2) + (3.2 x 10-4) = (4.215 x 10-2) + (0.032 x 10-2) = 4.247 x 10-2

Example: (8.97 x 104) - (2.62 x 103) = (8.97 x 104) - (0.262 x 104) = 8.71 x 104

Multiplication:

The digit terms are multiplied in the normal way and the exponents are added. The end result is changed so that there is only one nonzero digit to the left of the decimal.

Example: (3.4 x 106)(4.2 x 103) = (3.4)(4.2) x 10(6+3) = 14.28 x 109 = 1.4 x 1010

(to 2 significant figures)

Example: (6.73 x 10-5)(2.91 x 102) = (6.73)(2.91) x 10(-5+2) = 19.58 x 10-3 = 1.96 x 10-2

(to 3 significant figures)

Division:

The digit terms are divided in the normal way and the exponents are subtracted. The quotient is changed (if necessary) so that there is only one nonzero digit to the left of the decimal.

Example: (6.4 x 106)/(8.9 x 102) = (6.4)/(8.9) x 10(6-2) = 0.719 x 104 = 7.2 x 103

(to 2 significant figures)

Example: (3.2 x 103)/(5.7 x 10-2) = (3.2)/(5.7) x 103-(-2) = 0.561 x 105 = 5.6 x 104

(to 2 significant figures)

Powers of Exponentials:

The digit term is raised to the indicated power and the exponent is multiplied by the number that indicates the power.

Example: (2.4 x 104)3 = (2.4)3 x 10(4x3) = 13.824 x 1012 = 1.4 x 1013

(to 2 significant figures)

Example: (6.53 x 10-3)2 = (6.53)2 x 10(-3)x2 = 42.64 x 10-6 = 4.26 x 10-5

(to 3 significant figures)

Roots of Exponentials:

Change the exponent if necessary so that the number is divisible by the root. Remember that taking the square root is the same as raising the number to the one-half power.

Example:

Oops - the answer really is 4.2 x 10-3

QUIZ:

Question 1 Write in scientific notation: 0.000467 and 32000000

Question 2 Express 5.43 x 10-3 as a number.

Question 3 (4.5 x 10-14) x (5.2 x 103) = ?

Question 4 (6.1 x 105)/(1.2 x 10-3) = ?

Question 5 (3.74 x 10-3)4 = ?

Question 6 The fifth root of 7.20 x 1022 = ?

Answers: (1) 4.67 x 10-4; 3.2 x 107 (2)0.00543 (3) 2.3 x 10-10 (2 significant figures) (4) 5.1 x 108 (2 significant figures) (5) 1.96 x 10-10 (3 significant figures) (6) 3.73 x 104 (3 significant figures)

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5 0

2 years ago

Read 2 more answers

1. How do you think global trade patterns affect the supply of fresh fruit in your

strojnjashka [21]

Answer:However, it seems clear that globalization is taking place in all areas, including agriculture and horticulture. The world has been globalizing the market of fresh fruits and vegetables in line with the high demand from developing countries as to meet the needs of fresh fruits and vegetables that can be complied by domestic production. From the report , Indonesia is facing a challenge in providing fresh fruits, especially the domestic ones, for its population to prevent the high value of imported fruits. ...

... The world has been globalizing the market of fresh fruits and vegetables in line with the high demand from developing countries as to meet the needs of fresh fruits and vegetables that can be complied by domestic production . From the report, Indonesia is facing a challenge in providing fresh fruits, especially the domestic ones, for its population to prevent the high value of imported fruits. ...

International trade in fruits and vegetables has expanded at a higher rate than trade in other agricultural commodities, particularly since the 1980s. Not only has world trade in fruits and vegetables gained prominence, but the variety of commodities has expanded. Over the years, three regions-the European Union (EU), the North American Free Trade Agreement (NAFTA) area, and Asia (East, Southeast, and South)-have remained as both the major destinations and sources of supply. A substantial share of their trade is intraregional, particularly that of the EU. All the three regions, however, depend on Southern Hemisphere countries for imports of juices and off-season fresh fruits, and on equatorial regions for bananas, the leading fresh fruit import. In addition to global north-south trading, due mostly to the counter-cyclical seasons of the two hemispheres, Asian trade has also become much more important since the 1980s as incomes and populations have grown and policies changed.

Explanation:

The volume and variety of fruit and vegetables traded globally has grown since the 1990s, at an average annual growth rate of 4 % for both imports and exports. This growth is due to a rise in welfare, EU enlargement, improved technology, seasonal variation in production, and the consumer's demand for quality fruits and vegetables (WU HUANG 2004). Fruit and vegetable trade has also grown as a result of trade liberalization and is expected to be fostered even further when an agreement is concluded in the Doha Round. ...

... Trade policies, regulations and protocols developed at the global level and at the EU level, are applied among other things to protect domestic production. Growing regional and international trade agreements, an increase in negotiated bilateral free trade agreements, and further liberalization has led to lower barriers to trade (WU HUANG 2004). For EU horticulture, the most important (trade) policy and framework is the CAP (Common Agriculture Policy) and its accompanying reformed CMO (Common Market Organisation) for fruit and vegetables

Global trade in fruits and vegetables, often linked to geographical proximity and trade agreements, is impacted by historical, political, and climate events, as well as augmented and improved freight capacity. Global trade exports of fruits and vegetables increased from 11.7% in the period 1977-1981 to 15.1% for 1987-1991, and 16.5% in the period 1977-2001 [72]. In the USA, importation of fresh vegetables from 2000 to 2004 increased from 13.8% to 16.9%; import of spinach increased 314%, and head lettuce increased 303%, primarily from Mexico; from 2000 to 2006 imports increased 292% for raspberries (Mexico) and sweet cherries (Chile) [49]. ...

... For regional trade, the EU, country members of the North American Free Trade Agreement, and Asia are the most active trading regions. Countries from the Southern hemisphere and banana-exporting countries are important in the global trade of fruits and vegetables. Parasites have been imported with fresh produce to nonnative region/countries, leading to foodborne outbreaks.

6 0

3 years ago

Witch of the following would be deposited by a river

Serggg [28]

Where’s the following?

5 0

3 years ago

__________ is the study of the natural features, processes, and patterns that occur on the Earth’s surface.

mylen [45]

Answer:

Correct answer is D. Physical geography

Explanation:

A is not correct as human geography focuses more on the interaction between people and the areas that surrounds them. Their culture, economy, development...

B is not correct as cartography focuses on the map making process.

C is not correct as demography studies the human population.

D is correct as all of the mentioned features are a part of physical geography.

7 0

2 years ago

Read 2 more answers

Which of the following is standard procedure for handling injury or illness in the workplace? Move the victim to a safe place re

pshichka [43]

It should be the third because in the first one, you never want to move an injured person for risk of further injury.... the second, never want to leave them alone... the forth, do what you can to help as long as you are not increasing further risk

6 0

3 years ago

Read 2 more answers