UNIT 1: Measurements, Sig Figs, Conversions

Question 1

Assuming Accuracy

Answer 1

clearly seeing that a measurement is at least ______

Question 2

Accuracy

Answer 2

being correct with a single measurement

Question 3

Precision

Answer 3

the reproducibility of measurements

Question 4

What do you need to add after assuming accuracy?

Answer 4

one more place value after the assumed value

Question 5

After assuming accuracy, what should you do if you can clearly see that it is directly on that value?

Answer 5

You still need to add another place holder, however, if you are confident that it is exactly on the assumed value you can put a zero in as the place value

Question 6

Are leading zeros significant?

Answer 6

no

Question 7

Are ending zeros significant?

Answer 7

If there is a decimal anywhere in the number than yes, if not, then no

Question 8

Are sandwiching zeros significant?

Answer 8

yes

Question 9

What do you need to do after rounding a number. (this thing will give you the correct place value of the original number)

Answer 9

you need to add back all place holders with zeros

Question 10

What should you do if after you’ve rounded a number and added back all place holders and you still don’t have the correct number of sig figs?

Answer 10

You will need to turn your rounded answer into scientific notation

Question 11

where does the exponent in the standard form of scientific notation come from?

Answer 11

The number of times the decimal place was moved

Question 12

When adding and subtracting, how do you know the correct number of sig figs your sum/difference has to be?

Answer 12

The number that has the sig fig closest to the left is the number that will tell you what sig fig your answers goes to. You need to determine the place value for that far left sig fig and that is the place value you need to round your sum/difference to.

Question 13

When multiplying and dividing how do you know the correct number of sig figs your product has to be?

Answer 13

Find the number that has the least number of sig figs. The number of sig figs that number has is the amount of sig figs your product needs to have.

Question 14

What was scientific notation designed for?

Answer 14

It was designed specifically to put sig figs on the left and place holders on the right.

Question 15

Which direction in the “get bigger” direction?

Answer 15

the left

Question 16

Which direction is the “get smaller” direction?

Answer 16

the right

Question 17

In scientific notation standard form, where does the decimal always go?

Answer 17

To the right of the very first sig fig

Question 18

A decimal was moved to the left two times, what will the exponent be in standard scientific notation? Why?

Answer 18

It moved left, so the exponent will be positive, and it moved twice, so the answer is 2.

Question 19

What is the trick to memorizing the top of the metric prefix scale?

Answer 19

Saying The Great Mighty King Made Us Nationalize Pie Forever!

Tera, Giga, Mega, Kilo, Milli, Micro, Nano, Pico, Fento

Question 20

What is the trick to memorizing the bottom row of the metric prefix scale?

Answer 20

Saying: He Demanded Da Crust

Hecta, Deca, Deci, Centi

Question 21

What do each of the metric prefixes represent?

Answer 21

They each match up with their assigned place value.

Question 22

How many place holders (zeros) are in between each metric prefix?

Answer 22

3, meaning that kilo ,10E3, jumps 3 place values to mega, 10E6,

Question 23

When converting by moving the decimal, what do you need to determine?

Answer 23

How many steps (place holders) comes between the two metric prefixes.

Question 24

If you are converting a number from kilos to nanos what direction will you need to move the decimal?

Answer 24

Move 12 steps to the right