Physical Science Test 3

235.4 nA to amperes

.0000002354 A

64 lum to meters

.000064

43 cm to meters

.43

A certain scale is graduated to the hundredth of a gram(.01 g) which measurement from this scale is reported correctly A. 450.3556 g B. 0.466 g C. 467,003 g D. .00465498 g

0.466 g

2000 L

1

5.600 times 10 to the third g

2

100.A

3

Four different instruments give the following masses for the same object. Its acceptable value is 3.45 g. Which instrument is the most accurate A.4.56 g B.3.4512 g C.3.45240 g D.3.4681263 g

3.4512 g

For different instruments give the following masses for the same object its acceptable value is 3.45 g which instrument is the most precise A. 4.56 g B.3.4512 g C. 3.45240 g D.3.4681263 g

3.4681263

3200 should be expressed in scientific notation as A.3.200×10 to the third B. 3.2×10 to the third C. 32 times 10 to the second D. 3.2×10 to the fourth

32 times 10 to the second

.5602 mm

4

4000 Mg to kilograms

4,000,000 kg

40,000 should be expressed in scientific notation as A. 4.0000 x 10 to the fourth B. 4.0×10 to the fourth C. For. 4.0 x 10 to the fifth D. 4.00000×10 to the fifth

4.0000 x 10 to the fourth

55.000 kg

5

56,019,700

6

60 ks to seconds

60,000 s

0.007845 should be expressed in scientific notation as A. 7.8450 x 10 to the third B. 7.8450 x 10 to the negative 3 C. 7.845 x 10 to the negative third D. 7.85 x 10 to the third

7.845 x 10 to the negative 3

A new circular swimming pool is installed that is 1.5 m deep and 6.0 m in diameter. How many cubic meters of water will it take to fill the new pool?

9 m cubed

Which of the following numbers has the most significant digits A. 901.0 s B. 12,000 V C. 34.6 KM D. 0.0000042 J

901.0 s

Which of the following can be a source of error in the measurement A.the person measuring B. the object being measured C. the conditions of measuring D.instrument used E.all of the above

All of the above

Scientist drumly prefer ________ data over qualitive of data

quantitative

Scientist often take several measurements of the same object, average them together, and use the average value as the measurement because it tends to reduce the effect of _______ error

random

Which is the best way to find the volume of a metal cute A. Of a metric flask B. The displacement method C. Calculation D. A graduated cylinder

Calculation

An example of qualitative data is A. color B. volume C. temperature D. speed

Color

T or f all si base units are based on physical standards stored in the international bureau of weights and measures in severes france

False

T or f if a measurement is precise it is always accurate

False

T or f it is possible for a measurement to have unlimited precision

False

T or f the first country to standardize measurements was England

False

T or f weight directly measured the amount of matter in an object

False

t/f The si system has over 50 base units

False

Which of the following is a unit abbreviation for a quantity of matter A.KG B.CD C.N D.K

Kg

The system of internationally accepted metric units is also known by the abbreviation _________

SI units

Which of the following is not a reason that we measure things A.to glorify God B. to help our fellow human beings C. to learn about graduation D. to find answers to all our questions

To find answers to all our questions

T or f a measurement can end with a zero that is significant

True

T or f by definition a unit always has a value of one

True

T or f complete accuracy is impossible in scientific measurements

True

T or f every scientific measurement contains some error

True

T or f instruments are designed to help humans observe the world around them

True

T or f measured data consists of a number and a dimensional unit

True

T or f measurements usually do not fall directly on a scale marking

True

T or f metric prefixes are based on powers of ten

True

T or f the force of gravity can change depending on the position of the earth at which it is measured

True

T or f the weight of a person standing on top of a mountain is less than it would be at the bottom of the mountain

True

T or f when measuring with a metric instrument, estimate the measurement to 1/10 of the smallest decimal subdivision on the instrument scale

True

Which of the following can change your the solid objects change in location A. Mast B. Volume C. Density D. Weight

Weight

The cubic decimeter common known also as the _________, is commonly used for measuring volumes of liquids and gasses

liter

A Spring scale is an instrument that measures ________

weight