What is the mass number defined as ?

the number of protons and neutrons

the number of protons and electrons

What is the atomic number ?

the number of protons and neutrons combined

the number of protons and electrons combined

The atomic number of an atom is equivalent to which of the following?

the number of protons in the nucleus

the number of electrons outside the nucleus

the number of protons plus the number of neutrons in the nucleus

the number of neutrons in the nucleus

Why must we balance chemical equations?

to abide by the law of conservation of mass

to abide by the law of conservation of energy

What is changed in a chemical reaction like this one? NaOH + HCl → NaCl + H 2 O

molecules and compounds are changed

Why is the increase of Greenhouse gasses a big issue?

It causes climate change and increase in the global temerature

It can lead to a major increase in Greenhouses

It causes a major decrease in people

Earth's ozone layer is _____________________________.

filters harmful ultraviolet radiation from the sun

has been thickening over the past several years

traps carbon dioxide in the stratosphere

Which human activity would preserve nonrenewable resources?

removing carnivores from a forest

heating homes with fossil fuels

Increased industrialization will most likely

increase environmental carrying capacity

increase the stability of ecosystems

Which human activity is correctly paired with its likely future consequence?

use of fossil fuels — depletion of underground coal, oil, and natural gas supplies

overfishing in the Atlantic — increase in supply of flounder and salmon as food for people

development of electric cars or hybrid vehicles — increased rate of global warming

genetically engineering animals — less food available to feed the world’s population

Which human activity would most likely deplete nonrenewable resources?

use of natural enemies to eliminate insect pests

development of wildlife refuges

governmental restriction of industrial pollution

Approximately 75 percent of the Earth's surface is covered in water. So why is water considered such a precious resource?

Only a small fraction of the Earth's water is freshwater available for drinking and irrigation

The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere

Each year, more freshwater is being trapped in icecaps located at the North and South Poles

Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate

Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there?

the decrease of chemical runoff into the oceans

the increase of light pollution in cities

Which of the following historical events most likely triggered the largest increase in the human population?

the Industrial Revolution, which began in the late 1700s

the Black Death plague, which occurred in the mid-1300s

the domestication of wheat crops, which began around 8000 B.C

the fall of the Roman Empire, which occurred around A.D. 800

8th Grade Science Pre/Post Growth Assessment

Quiz

•

Science

•

8th - 10th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-PS1-1, MS-ESS2-4, MS-PS1-2

+16

Standards-aligned

Traci Johnson

Used 15+ times

FREE Resource

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which subatomic particle does the YELLOW(-) circle represent?

proton

neutron

electron

nucleus

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which subatomic particle does the GREEN( ) circle represent?

proton

neutron

electron

nucleus

Tags

NGSS.5-PS1-1

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8th Grade Science Pre/Post Growth Assessment

54 questions

Which subatomic particle has a positive charge?

Which subatomic particle has a negative charge?

Which subatomic particle as no charge, also known as a neutral charge?

What is the center of an atom called?

Which subatomic particle does the RED(+) circle represent?

Which subatomic particle does the YELLOW(-) circle represent?

Which subatomic particle does the GREEN( ) circle represent?

What is the tiniest particle in the entire universe?

What is the name of a single type of atom?

What is the term for combining 2 or more atoms together?

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