Standard: SC.8. L.18.4

Johanna learns that the Law of Conservation of Energy states that energy is conserved, never lost. Which of the following best describes the process that breaks down food to provide energy for plants and animals?

•  A. carbonation

• B. cellular respiration

• C. decomposition

• D. photosynthesis

Tags

NGSS.MS-LS1-7

Debra says that there is no gravitational force between dust particles because they have insignificant mass.  Peggy says that dust particles do pull on each other gravitationally and would move toward each other if they were in outer space. Who has the better argument and why?

• A. Debra, because the objects with only a little mass are not affected by gravity

• B.  Debra, because any force on a dust particle would change its motion.

• C.  Peggy, because any two objects exert a gravitational force on each other.

• D. Peggy because objects with smaller mass have more gravity acting on them

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Standard: SC.7. L.17.2

 To the left is a sample of a food web.

If the fish population decreases, what is the most direct effect this will have on the aquatic ecosystem?

• A. The leopard seals will all die from lack of food

• B. The krill population will only be consumed by seagulls

• C. The zooplankton population will increase in size.

• D. The phytoplankton population will increase in size.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Standard: SC.7. L.17.2

As a bee feeds upon the nectar produced by a flower, the bee may become coated with the flower's pollen. As the bee flies from flower to flower, some of this pollen may contact a flower's pistil, resulting in pollination. Which of the following is the relationship between the bee and the flower?

• A.  competition

• B. commensalism

• C. mutualism

• D. parasitism

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Standard: SC.7. L.16.1

 Freckles (F) are a dominant trait.  The Punnett square for a non-freckled parent and a homozygous freckled parent is shown to the left. What is the probability that their children will have freckles?

• A. 75%

• B. 0%

• C. 100%

• D.  50%

Tags

NGSS.MS-LS3-2

Standard: SC.8. L.18.4

A diagram of the carbon-oxygen cycle is shown. Which of the following is mainly responsible for the removal of carbon dioxide from atmosphere?

• A. factories

• B. animals

• C.  soil

• D.  plants

Tags

NGSS.MS-LS1-6

Standard: SC.8.P.8.5

The chart below shows the different combinations that some elements make when they react with oxygen. When an element reacts to form a compound, which statement is true?

• A. When an element reacts to form a compound, its physical properties are not changed

• B. When an element reacts to form a compound, its atoms can only combine in one way.

• C. When an element reacts to form a compound, only its chemical properties are changed.

• D. When an element reacts to form a compound, its atoms combine in a multitude of ways.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Standard: SC.7. E.6.4

Oceanic crust is denser than continental crust. Which of the following is most likely to happen when a plate carrying oceanic crust converges with a plate carrying continental crust?

• A. The plates collide, and mantle convection stops

• B. The denser oceanic plate gradually sinks into the mantle and melts.

• C. Both the oceanic and the continental plates sink into the mantle and melt.

• D. The less dense continental plate gradually sinks into the mantle and melts.

Tags

NGSS.MS-ESS2-3

Standard: SC.6. L.14.5

You and your classmate are discussing different organs and organ systems within the human body. Your friend states that the excretory system includes multiple organs, and one of those organs is the lungs. You argue that the lungs can’t possibly be in the excretory system since it is part of the respiratory system. Which of the following choices would be the best statement that your friend would use to justify why the lungs help keep homeostasis for the excretory system?

• A. The lungs bring in oxygen, which is a vital gas to keep our cells alive and healthy.

• B. The lungs exhale carbon dioxide, which is a waste gas and needs to be removed from the body.

• C. The lungs provide cells with a gas that is important for the cell process of respiration.

• D. The lungs remove waste in the forms of solids, liquids, and gases that could be harmful for the body.

Standard: SC.6. L.14.2

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

• A. All living things are made of cells.

• B. All cells come from other preexisting cells.

• C. Cells form through spontaneous generation.

• D. Cells are the basic structural and functional units of life.