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physical science 8th > section 1.3,4,5 quiz > Flashcards

section 1.3,4,5 quiz Flashcards

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Biology 101 flashcards
1
Q

what is weight?

A

a measure of the force of gravity on you

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2
Q

what is mass?

A

a measure of the amount of matter an object contains

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3
Q

what is volume?

A

the amount of space an object contains

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4
Q

what is meniscus?

A

the curved upper surface of a liquid in a column of liquid.

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5
Q

what is density?

A

the mass per unit volume.

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6
Q

what is the Celsius Scale?

A

the temperature where water freezes at 0 degrees Celsius and freezes at 100 degrees Celsius

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7
Q

what is the Kelvin scale?

A

0 is the temperature at which no more energy can be removed from matter

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8
Q

what is absolute zero?

A

the temperature 0 K on the Kevin scale

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9
Q

what is an estimate?

A

an approximation of a number based on reasonable assumptions.

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10
Q

what is being accuracy?

A

how close a measurement is to the true or actual value.

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11
Q

what is reproducibility?

A

how close a group of measurements are to each other.

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12
Q

what are significant figures?

A

all of the digits that have been measured exactly, plus one digit whose value has been estimated.

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13
Q

what is precision?

A

the exactness of a measurement.

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14
Q

what is a graph?

A

a picture of the data.

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15
Q

what is a horizontal axis?

A

the x axis, the graph line that runs left to right.

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16
Q

what is the origin?

A

the point where the two axes cross.

17
Q

what are si units?

A

units to measure length, volume, mass density, temperature, and time

18
Q

what is a coordinate?

A

a pair of numbers that determines the position of the point on the graph.

19
Q

what is a data point?

A

the point showing the location of that intersection.

20
Q

what is the line of best fit?

A

a smooth line that reflects the general pattern of the line on the graph.

21
Q

what is a linear graph?

A

the data points that yield a straight line.

22
Q

what is the slope?

A

the steepness of the graph line.

23
Q

what is a nonlinear graph?

A

the data points that do not fall on a straight line.

physical science 8th (5 decks)

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