1. 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%
2. The diagram represents a solid object with a mass of 120 grams. What is the density of the object?
1. 0.50 g/cm3
2. 2.0 g/cm3
3. 5.0 g/cm3
4. 6.0 g/cm3
3. Scientists often use classification systems in order to
1. extend their powers of observation
2. organize their observations in a meaningful way
3. make direct comparisons with standard units of measurement
4. make more accurate interpretations
4. The best evidence that the Earth has a spherical shape is provided by
1. photographs of the Earth taken from space satellites
2. the amount of daylight received at the North Pole on June 21
3. the changing orbital speed of the earth in its orbit around the Sun
4. the cyclic change of seasons
5. Precise measurements of Earth indicate that its polar diameter is
1. shorter than its equatorial diameter
2. longer than its equatorial diameter
3. the same length as its equatorial diameter
6. Under the same conditions of temperature and pressure, three different samples of the same uniform substance will have the same
1. shape
2. density
3. mass
4. volume
7. The use of a triple-beam balance to determine the mass of a rock is an example of measuring by using
1. all of the five senses
2. inferences and interpretations
3. a direct comparison with a standard
4. a combination of dimensional quantities
8. Which statement provides the best evidence that Earth has a nearly spherical shape?
1. The Sun has a spherical shape.
2. The altitude of Polaris changes in a definite pattern as an observer’s latitude changes.
3. Star trails photographed over a period of time show a circular pattern.
4. The lengths of noontime shadows change throughout the year.
9. Which graph best illustrates the average temperatures of the planets in the solar system?
10. Earth has fewer impact craters than Mercury because of the
1. destruction of meteorites in Earth's upper atmosphere
2. more rapid subduction of crustal plates on Mercury
3. slower weathering and erosion rates on Earth
4. faster rotational speed of Mercury
