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35 Cards in this Set
 Front
 Back
In order to make observations an observer must use....

1 experiments
*2 the senses* 3 proportions 4 mathematical calculations 

A pebble found in a dry field has rounded edges. An instructor says that the pebble has been rolled over in a flowing stream. His comment can be classified as

*1 an inference*
2 a fact 3 a description 4 an observation 

The general purpose of a scientific system of classification is to

1 make better interpretations
2 eliminate observations *3 organize for easier study* 4 state theories 

Which property was probably used to classify the substances below?
(diagram on page 2) 
1 chemical composition
2 specific heat *3 physical state (phase)* 4 abundance within Earth 

Which descriptive term illustrates an inference?

1 transparent
2 bitter *3 younger* 4 smooth 

The graph below shows the amount of noise pollution caused by factory machinery during a oneweek period. Which is best supported by the graph?
(graph on page 6) 
1 The machinery ran 24 hours a day.
*2 The machinery was turned off Sat. and Sun.* 3 The level of pollution remained constant during work hours. 4 The noise volume reached a peak on Friday. 

A student recorded the times of three successuve high tides at one location as:
9:12 am 9:38 pm 10:04 am What is the approximate time of the next high tide? 
1 10:12 pm
*2 10:30 pm* 3 10:38 pm 4 11:04 pm 

While on a field trip to a large lake in NYS an observer recorded four statements about this lake. Which of these statements is most likely and inference?

*1 The lake was formed by glacial action*
2 The water is clear enough to see the bottom of the lake. 3 A log is floating in the lake. 4 The surface temperature of the lake is 18.5 degrees C 

A student measures the volume of a rock sample to be 17 cubic centimenters The student later finds that the actual volume of the rock is 20 cubic centimeters. Calculate the percent deviation of the student's measurement.

*1 15%*
2 18% 3 3% 4 85% 

Density is usually expressed in

1 cm/in squared
*2 g/cm cubed* 3 km/hr 4 N/m squared 

The three basic dimensional qualities are

1 time length and shape
2 density mass and volume *3 time length and mass* 

Two measurements often used interchangeably are

1 mass and length
2 density and volume 3 length and shape *4 weight and mass* 

A student determines the mass of a rock to be 196 grams but the actual mass of the rock is 200 grams . The student's approximate percent deviation (percentage of error) is

1 1.0%
*2 2.0%* 3 1.5% 4 4.0% 

What object is most probably the ice cube?
(diagram on page 8) 
1 A
*2 B* 3 C 4 D 

Which object probably has the same density as the liquid?

1 A
2 B *3 C* 4 D 

Which choice lists the object d in the order of lowest density to highest density?
(diagram on page 8) 
*1 A B C D*
2 A D C B 3 D C B A 4 C B A D 

At which temperature does water have its greatest density?

1 7 degrees C
2 O degrees C 3 96 degrees C *4 4 degrees C* 

Which two minerals samples have the same density?
(diagram on page 9) 
1 A and D
*2 A and E* 3 C and D 4 B and E 

What is the density of the object?
(diagram on page 9) 
1 0.5 g/cm cubed
*2 2.0 g/cm cubed* 3 5.0 g/cm cubed 4 6.0 g/cm cubed 

If the sample were cut in half, the density would be

1 twice as much
2 half as much *3 the same* 

As a volume of air expands due to heating, the density of the air will

*1 decrease*
2 increase 3 remain the same 

In which phase (state) do most Earth materials have their greatest density?

*1 solid*
2 liquid 3 gas 

What is the density of an irregularly shaped object that has a volume of 3.0 mm and a mass of 12 grams?

1 1.0 g/mL
2 2.0 g/mL 3 3.0 g/mL *4 4.0 g/mL* 

What always happens when a change occurs?

1 Pollution is produced
2 The temperature of as system increases *The properties of a system are altered.* 4 Dynamic equilibrium is reached. 

A boundary between two regions of change is called a(n)

1 transition zone
2 transfer zone *3 interface* 4 cycle boundary 

Over several years, the apparent size of the Sun as viewed by an observer on Earth will probably

*1 vary in a cyclic manner*
2 decrease at a regular rate 3 increase at a regular rate 4 vary in an unpredictable manner 

Which graph best represents the greatest rate of temperature change?

(diagram on page 12)
answer 2 

A student measures the distance from a bridge to a rock every day for a week. What is indicated by the grpah of these measurements as shown below
(diagram on page 12) 
1 no change in time or distance took place
2 as distance decreased, time increased 3 as distance increased, time decreased *4 as time increased, distance remained the same* 

Based on this data table which graph best represents the general relationship between population and concentration of dust particles?
(diagram on page 14) 
answer 4


Which energy source listed below is most nearly pollution free?

1 nuclear
*2 solar* 3 coal 4 natural gas 

Which pollutant is not usually produced or added to the environment by human activities?

1 sound
*2 pollen* 3 radiation 4 smoke 

People who live close to major airports are most likely to complain about which form of pollution?

*1 sound*
2 heat 3 radioactivity 4 particulates 

Which condition exsists when the rates of water flowing into and out of a lake are balanced so that the lake's depth appears to be constant?

*1 equilibrium*
2 transpiration 3 hydration 4 saturation 

What is likely cause for the increase of pollutants of 8am and 5pm on the two days?
(diagram on page 15) 
1 change in insolation
2 occurence of precipitation 3 high wind velocity *4 heavy car traffic* 

On the basis of the trends indicated by the graph at what time on Thursday July 12 will th greatest amount of pollutants probably be observed?
(diagram on page 15) 
1 12 noon
*2 5pm* 3 3am 4 8am 