Ok, so I have a test coming up and my teacher gave me a review packet. I cant find my physics book, so I turned to Yahoo Answers fro the ones I dotn't remember the answers for. Thanks 
1. The base SI unit for length is the ____.
a. foot
b. inch
c. meter
d. kilogram
2. The metric prefix that means 1*10^6 is____
a. pico
b. mega
c. nano
d. giga
3. To avoid parallax errors, lab instruments should read _____.
a. at eye level
b. from the side
c. below eye level
d. at all these positions
4. How many significant digits are in the measurement 2.560 * 10^4?
a. 1
b. 2
c. 3
d. 4
5. A sample weighs 28.40 g. Which is the estimated digit?
a. 2
b. 8
c. 4
d. 0
Ok, fro these next ones, the statement is either true or false. If it's false, please explain why
1. In a scientific method, conclusions are tested to find out whether they are valid.
2. The degree of exactness of a measurement is called acurracy.
3. Other scientists must be able to recreate an expirement and obtain similar data.
4. The last digit in any measurement is the significant digit.
5. Zeros at the end of the number locate the decimal point.
1. The base SI unit for length is the ____.
a. foot
b. inch
c. meter
d. kilogram
2. The metric prefix that means 1*10^6 is____
a. pico
b. mega
c. nano
d. giga
3. To avoid parallax errors, lab instruments should read _____.
a. at eye level
b. from the side
c. below eye level
d. at all these positions
4. How many significant digits are in the measurement 2.560 * 10^4?
a. 1
b. 2
c. 3
d. 4
5. A sample weighs 28.40 g. Which is the estimated digit?
a. 2
b. 8
c. 4
d. 0
Ok, fro these next ones, the statement is either true or false. If it's false, please explain why
1. In a scientific method, conclusions are tested to find out whether they are valid.
2. The degree of exactness of a measurement is called acurracy.
3. Other scientists must be able to recreate an expirement and obtain similar data.
4. The last digit in any measurement is the significant digit.
5. Zeros at the end of the number locate the decimal point.