9 Week's Exam Review Game

Certain rocks contain minerals that are easily dissolved by water. This is why rain can break down rock. What process is this describing?

• Chemical Weathering

• Physical Weathering

• Cementation

• Melting

Early one spring, a river overflows its banks and floods the fields of several farmers. Which farmer best understands the long-term effects of the flooding?

• Farmer Babbs is upset because the seeds she has planted will be washed away

• Farmer Diaz is grateful because her fields will be well watered

• Farmer Martin is grateful because the floodwaters have brought nutrients to her field

• Farmer Soto is upset because her field is too soggy for her tractor

Erosion is the set of all processes by which sediment is transported. From which hillside will erosion be the greatest?

• A hillside that is bare, with no plant cover

• A hillside that has many plants with deep roots

• A hillside covered by dense grass and shallow roots

• A hillside covered by a mix of plants and grass

When a physical or chemical change occurs, the Law of Conservation of Mass always applies. What happens to the atoms during a chemical change according to this law?

• Atoms are created

• Atoms are destroyed

• Atoms are rearranged

• Atoms are changed into charged particles

It is not always clear when a substance undergoes a chemical change. Which of the following is most likely evidence of a chemical change?

• A substance gets smaller

• A substance gives off heat

• A substance changes state

• A substance changes volume.

When the minerals within a rock dissolve in water, what happens to the mass of the rock?

• The mass of the rock increases because new compounds are created in the water.

• The mass of the rock decreases because the minerals are destroyed.

• The mass of the rock decreases because the minerals are now in the water.

• The mass of the rock remains unchanged because the minerals disappear.

Scientific investigations should always be able to be replicated. What is the BEST reason for scientists to replicate an investigation?

• A scientist needs to conduct multiple trials to ensure that results are accurate.

• Other scientists need to conduct the same experiment to verify the results

• Scientists need to communicate the results

• Replicating an investigation proves that the hypothesis was correct

Students are modeling a volcano by using the chemical reaction between baking soda and vinegar. They mix water and food coloring in a cup, then add baking soda. The students then slowly add vinegar and watch the "volcano" erupt as it releases carbon dioxide. Which of the following changes would be most likely to decrease the speed at which the "volcano" erupts?

• adding more warm vinegar

• adding an ice cube

• adding more baking soda

• adding more food coloring

Scientific knowledge is based on empirical evidence. Which of the following is an example of empirical evidence?

• Guesses

• Inferences

• Data

• Imagination

Sonia is interested in how rising sea temperatures impact algae life, so she decides to measure the amount of algae in a sample of water taken from a specific ocean site under varying temperatures. What is the independent variable in Sonia’s scenario?

• The amount of water in the sample

• Algae life

• Ocean temperature

• The number of algae in the sample