FSA Practice- Science 8th

SC.7.N.1.4

Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below.

• Number of bubbles produced

• The type of plant placed in the beaker

• The distance of the light source from the plant

• The amount of time the bubbles were counted

SC.7.N.1.2

The following statements were taken from the procedures of four different investigations. The statement from which investigation is an example of repetition?

• Investigation 1

• Investigation 2

• Investigation 3

• Investigation 4

SC.7.N.3.2

Two types of models that can be used to show details of the structures of cells are shown below. Which of the following describes a limitation of the drawing but NOT the clay model?

• A. It does not represent the main parts of a cell.

• B. It does not contain the correct number of nuclei.

• C. It cannot represent a living cell, since a true cell is three-dimensional.

• D. It cannot represent a living cell, since the cytoplasm should be in constant motion.

SC.6.N.2.2

Scientific knowledge may change as new evidence or information is discovered. Which of the following would NOT be a result of new scientific research and information?

• A. Binomial nomenclature is assigned to a recently identified plant species.

• B. An endangered monkey species is put in a reserve for protection from extinction.

• C. A newly discovered chemical element will be added to the periodic table of the elements.

• D. A nonnative plant species will begin to reproduce rapidly after being introduced into a swamp ecosystem.

SC.8.N.3.2

A timeline of some models of atoms throughout history is shown below. These models have contributed to the formation of the atomic theory. Which statement best summarizes the development of the atomic theory over time?

• A. The discovery of new evidence resulted in changes to the atomic theory.

• B. Advancements in atomic models proved the atomic theory was accurate.

• C. The atomic theory was modified with the discovery of every new element.

• D. Changes in atomic models showed that the atomic theory was based on opinion.

SC.8.E.5.3

The points labeled on the chart below represent the approximate diameter, in kilometers (km), Earth, the Milky Way, the Moon, and the Sun. The approximate size of the Solar System is also shown. Which point on the chart best represents the approximate size of the Sun?

• W

• X

• Y

• Z

SC.8.E.5.5

One physical property of a star is apparent magnitude. Which of the following is used in determining the apparent magnitude of a star?

• A. the constellation the star is in

• B. the distance the star is from Earth

• C. the number of times the star rotates

• D. the number of prominences the star makes

SC.8.E.5.7

The surface of Mercury has many more craters than the surface of Earth has. Which of the following statements best explains why Mercury has many more craters than Earth has?

• A. Mercury rotates faster than Earth does.

• B. Mercury has a smaller mass than Earth has.

• C. Mercury is much closer to the Sun than Earth is.

• D. Mercury has a thinner atmosphere than Earth has.

SC.8.E.5.9

The water level at the beach changes during the day. What causes the different water levels?

• A. Earth’s revolution

• B. the Moon’s rotation

• C. Earth’s magnetic field

• D. the Moon’s gravitational pull

SC.7.E.6.6

Deforestation occurs when large areas of trees are cut down. Which of the following impacts on the environment would result from deforestation?

• A. increased erosion

• B. colder temperatures

• C. decreased carbon dioxide

• D. greater oxygen production