Unit 2 Review

Why are producers found at the base of the pyramid?

• They have the most energy of all of the trophic levels

• There are more plants than animals.

• They begin the flow of energy in an ecosystem.

• All of these answers are correct.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the sun's role in the energy pyramid?

• to produce chemical energy for the ecosystem.

• to provide radiant energy for producers to convert to chemical energy. 

• to start the energy flow of the ecosystem. 

• to provide mechanical energy for producers to convert to chemical energy. 

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

An animal that eats only plants is an...

• carnivore

• omnivore

• herbivore

• decomposer

Tags

NGSS.MS-LS2-1

Which animal is the apex predator?

• hawk

• lizard

• snake

• grass

Tags

NGSS.MS-LS2-3

What does the number 18.998 represent?

• The atomic number of fluorine

• The number of electrons in fluorine

• The number of protons in fluorine

• The average atomic mass of fluorine

Which sub-atomic particle is positively charged and found in the nucleus?

• Proton

• Neutron

• Electron

• Ionic charge

Which of these statements is correct about nitrogen?

• All Nitrogen atoms have 14 protons.

• Nitrogen atom has more protons than a Fluorine anion.

• All Nitrogen atoms have 7 protons.

• The mass number of Nitrogen is 21.

Tags

NGSS.MS-PS1-1

Elements in the same group/family of the periodic table are similar in what way?

• They are all metals

• They have a full outer shell of electrons.

• They are all nonmetals

• They have the same number of valence electrons.

A researcher is trying to create a new super conductive wire. Which category on the periodic table should he or she look in first?

• Metals

• Metalloids

• Non-metals

• Noble gases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Chlorine forms the chloride ion to bond with many metals. To become a chloride ion with a -1 charge, a chlorine atom must

• gain one proton.

• lose one proton.

• gain one electron.

• lose one electron.