2nd Quarter C9A Review 2021

A species of macaws live in an tropical rainforest. The parrots require nesting sites, food, and water. There are parasites that affect the species of birds. An increase in which limiting factor would cause a decrease in the macaw population?

• number of parasites

• water

• number of nesting sites

• food

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is an effect of deforestation?

• decrease in topsoil in deforested areas

• a balance of carbon dioxide in the atmosphere

• decreased runoff in deforested areas

• decreased nitrogen in the atmosphere

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is an effect of urbanization?

• wildlife diversity increases due to more open spaces within the city.

• more land is available in large cities to grow crops

• the greater concentration of people in large cities reduces overall waste production and accumulation on Earth.

• Emissions from motor vehicles increase smog in the air that can trap heat from the Sun

Tags

NGSS.MS-ESS3-4

Which would be a result from a bird not having a place to build a nest?

• the number of predators in the area would increase

• the number of offspring would decrease

• the number of food resources for the bird would decrease

• the number of new bird diseases would increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Sea birds and large fish eat krill. As populations of sea birds and large fish increase, how will the ecosystem be affected?

• the krill population will increase

• the competition for krill will increase

• the population of the krill will stay the same

• the krill will become extinct

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which statement is true about the mass of an atom?

• It is determined by the number of subatomic particles in the nucleus

• it depends on the number of electrons it has

• it is evenly distributed among its subatomic particles

• it is how many electrons are in the electron cloud

Which of the following statements is true about the subatomic particles of an atom?

• Electrons are a positive charge and are in the electron cloud

• neutrons are in the nucleus and are a negative charge

• electrons have a negative charge and are in the electron cloud

• neutrons have a positive charge are in the nucleus

How would an atom be neutral?

• It's protons and neutrons are in the nucleus

• they have an even number of protons

• the number of electrons and protons are equal

• it has the same number of protons and neutrons

What subatomic particles are in the nucleus of an atom?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, neutrons, and electrons

Which best explains why a solid has a definite shape and volume?

• the particles have a weak attractive force

• the particles are in a fixed position and are close together

• the particles move fast enough to overcome some of the forces

• the particles move fast enough to overcome all of the forces

Tags

NGSS.MS-PS3-4