Science

Which statement accurately describes a state of matter?

• Solids take the shape of their container

• Gases maintain a fixed shape

• Liquids will expand to fill the volume of a container

• Gases expand to fill an entire space

The Grand Canyon is more than 400 km long and in some places almost 2 km deep. Which model best represents the main process that formed the Grand Canyon?

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Which of the following is the most likely food source for a carnivore?

• A plant

• The Sun

• An Animal

• A dead tree

How might clearing forest areas for the construction of factories potentially affect the stability of the carbon cycle?

• A greater amount of oxygen will be released into the atmosphere by the construction of the factories while a decreased amount of carbon dioxide is produced by the remaining forest areas.

• A lesser amount of carbon dioxide will be taken in and used for food production by forests while more carbon dioxide is produced by factories.

• The amount of carbon dioxide available for photosynthesis in the remaining forest areas will be decreased due to the construction of factories.

• The amount of oxygen in the atmosphere available for animal respiration will likely increase due to deforestation.

Which list of characteristics best describe the properties of neon, argon, and krypton?

• Conducts heat and electricity, shiny, and solid

• Brittle metalloids, reactive with oxygen, and melt at low temperatures

• Gaseous at room temperature and chemically stable

• Magnetic, highly reactive, and flammable

How are organisms, such as snakes, cacti and coyotes able to survive in harsh desert conditions?

• Over thousands of years these organisms have developed adaptations to survive in arid climates

• These organisms migrate out of the desert during the summer months

• These organisms work together to find sources of food and water

• Snakes, cacti and coyotes are all aquatic species that live in ponds and rivers during the hot day

Formation of charred sugar is a_______ change.

• Reversible

• Irreversible

Which of the particles in the chart is a neutron?

• Particle A

• Particle B

• Particle C

• Particle A and B

Which statement describes how fossil fuels are made?

• Oil from Earth's core slowly rises to the Earth's surface and forms ponds

• Lava within some volcanoes becomes so hot that it transforms into fossil fuels

• Dead and decomposing organisms are exposed to extreme heat and pressure transforms them into fossil fuels

• When mountains form on top of coal, the pressure liquefies the coal creating fossil fuels

Bursting of balloon is a _______ change.

• Reversible

• Irreversible