Analyzing Data — Unit test Answers

Which is a factual statement that cannot be changed or replaced?

From the outside, a whale’s flippers appear to be flat, solid objects. However, when scientists observed the bones within whale flippers they found bones like the ones shown in the diagram.

After visiting a wastewater treatment plant, Shelley has a few questions.Which question can be answered through scientific investigation?

For which question could a scientist develop a testable hypothesis?

According to the theory of global warming, the average temperature of Earth’s air began rising rapidly when humans first started burning fuels such as oil. Burning these fuels releases carbon dioxide into the air. Scientists have observed that carbon dioxide traps heat from the Sun in Earth’s atmosphere. They have also observed ice melting in some areas.

Alisha organizes her data about the element lead into a table.Which did Alisha place in the wrong column?

Regina conducted an investigation to determine whether earthworms add nutrients to soil. She used two pots of soil. She added three earthworms to the first pot. She did not add any earthworms to the second pot, which was the control. Regina tested the nutrient levels of the soil in both pots after two weeks.What type of investigation is Regina conducting?

Which best describes the purpose of bar graphs?

Analyze the graph.

Mark observes that when his father throws a basketball, it bounces higher than when Mark throws the same ball. He wonders, "Is this because my dad is much taller than me?"What can Mark do to best answer his question?

While studying bacterial cells, scientists measure the lengths of the cells in one colony. The chart shows their data.

Kelly wants to know how a cactus adapts to the hot, dry conditions of the desert. She reads several previously conducted studies about cactus plants.Which part of the scientific process did she complete?

Pluto was removed from the list of planets because a planet is now defined as an object that: orbits the Sun.is large enough to have become round due to the force of its own gravity.dominates the neighborhood around its orbit.Pluto does not dominate its neighborhood.What is the most likely reason for changing the classification of Pluto?

Some students are conducting a comparative investigation of soil.Which step will they most likely complete as part of this investigation?

Cosmologists are scientists who study stars, galaxies, black holes, and other objects in the universe. In order to study the billions and billions of stars, cosmologists use highly advanced telescopes and create computer models to trace the stars’ motion.

Which describes data that is faked or misplaced?

Look at the scatterplot graph.

Analyze the scatterplot graph.

Consider the cycle of science shown in the diagram.

A research student wants to know whether ethanol is a better fuel than gasoline.Which step in the process of scientific inquiry has already been completed?