FL 8th Grade Statewide Science Assessment

Front

What best describes a compound?

Back

a substance made up of two or more elements that are chemically combined

Front

Scientific theories are developed over time in all areas of science. Which statement best describes scientific theories?

Back

They are explanations of scientific events that may change based on continuous research.

Front

Changes in atmospheric CO₂ levels over two years are shown in a graph. Which change in the biosphere most likely caused these changes? Options: Streams froze in the winter and melted in the spring., Plants grew leaves in the spring and lost leaves in the fall., Offspring were born in the summer and matured in the fall., Soil dried out in the summer and absorbed moisture in the winter.

Back

Plants grew leaves in the spring and lost leaves in the fall.

Front

Based on the law of conservation of mass, what is expected to occur inside Jordan’s terrarium?

Back

The mass will neither increase nor decrease.

Front

What is occurring in part X of the diagram regarding human body systems and blood pressure?

Back

Homeostasis is maintained as the other body systems work with the circulatory system.

Front

The table below shows the range of frequencies, in Hertz (Hz), for part of the electromagnetic spectrum.

Back

Infrared

Front

An astronomer observes a sunspot. Which of the following describes this feature of the Sun?

Back

a location that is cooler than other parts of the Sun’s surface

Front

What question would help distinguish organisms as members of the animal kingdom rather than the plant or fungi kingdom?

Back

3

Front

Atoms are made up of subatomic particles, including neutrons. Which of the following describes a neutron?

• has a greater volume than the electron cloud
• has more mass than the nucleus
• has no charge
• has no mass

Back

has no charge

Front

Two groups of students hypothesized that rocks on Earth’s surface are damaged by acid rain. Group X tested the hypothesis by examining properties of some rocks and pouring a weak acid, vinegar, on each of the rocks. Group Y later repeated the same procedure with a different group of rocks. The rocks used for the investigations and the results from each student group are shown below. Which of the following best describes an advantage Group X has over Group Y in supporting the hypothesis?

Back

Group X tested a greater variety of rocks than Group Y did.