Arkansas Science Learning Standards — Grade 8


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ESS.10.8.1

Summarize the effects of gravity on bodies in space

ESS.10.8.2

Identify variables that affect the amount of gravitational force between two objects: mass of the objects distance between the objects

ESS.10.8.3

Relate the effects of the moons gravitational force on Earths ocean tides

ESS.10.8.4

Identify the causes of the following: high tides low tides spring tides neap tides

ESS.10.8.5

Define the terms galaxy and universe

ESS.10.8.6

Illustrate the appearance of galaxies as seen through a telescope: clarity shape

ESS.10.8.7

Compare and contrast the Milky Way Galaxy to other galaxies

ESS.10.8.8

Illustrate the position of our solar system within the Milky Way Galaxy

ESS.10.8.9

Investigate careers, scientists, and historical breakthroughs related to gravity, galaxies, and the universe

ESS.8.8.1

Analyze the causes and predict the consequences of global warming on the following: weather temperature ocean water levels

ESS.8.8.10

Explain how weathering and erosion affect the oceans salinity

ESS.8.8.11

Investigate careers, scientists, and historical breakthroughs related to external forces that change the Earth

ESS.8.8.12

Investigate the types of weathering involved in the breakdown of organic and inorganic components of Earths surface

ESS.8.8.13

Illustrate soil profiles

ESS.8.8.14

Apply knowledge of soil profiles to local soil samples

ESS.8.8.15

Investigate the formation of soil types

ESS.8.8.16

Identify components of soil as inorganic or organic through investigations

ESS.8.8.17

Identify the basic nutrients needed by plants that are present in soils: nitrogen phosphorous potassium

ESS.8.8.18

Identify ways plants use organic and inorganic components in the soil

ESS.8.8.19

Investigate and analyze the composition of a variety of soils

ESS.8.8.2

Investigate how global patterns of water currents influence local weather: Gulf Stream Atlantic Currents California Current

ESS.8.8.20

Conduct investigations on soil permeability

ESS.8.8.3

Conduct investigations to compare and contrast different landforms found on Earth: mountains plateaus plains

ESS.8.8.4

Synthesize and model the result of both constructive and destructive forces on land forms: deposition erosion weathering crustal deformation

ESS.8.8.5

Compare and contrast the different landforms caused by Earths external forces: plains canyons deltas valleys swamps

ESS.8.8.6

Research local, regional, and state landforms created by external forces on Earth: Gulf Coastal Plain Arkansas River Valley Mississippi Alluvial Plain, including the delta region Crowleys Ridge

ESS.8.8.7

Use topographic maps to identify surface features of Earth

ESS.8.8.8

Demonstrate an understanding of the agents of erosion: gravity water ice wind animals, including humans

ESS.8.8.9

Using models of rivers, predict changes when variables, such as load, slope, amount of water, or the composition of a stream bed, are changed through erosion or deposition

ESS.9.8.1

Explain processes that have changed Earths surface that have resulted from sudden events (e.g., earthquakes and volcanoes) and gradual changes (e.g., uplift, erosion, and weathering)

ESS.9.8.2

Analyze how rock sequences may be disturbed by the following: erosion deposition igneous intrusion folding faulting uplifting

ESS.9.8.3

Explain how scientists determine the relative ages of fossils found in layers of sedimentary rock: law of superposition law of cross-cutting

ESS.9.8.4

Apply geologic laws of superposition and cross-cutting to determine the relative age of rock in a cross section

LS.2.8.1

Illustrate the hierarchical relationships of cells, tissues, organs, organ systems, and organisms

LS.2.8.2

Identify different types of single-celled organisms: protists bacteria

LS.2.8.3

Relate the effect of bacteria on oral health

LS.2.8.4

Describe and illustrate singlecelled organisms found in pond water

LS.2.8.5

Use a dichotomous key to classify organisms found in pond water

LS.2.8.6

Compare and contrast characteristics of unicellular organisms and multi-cellular organisms

LS.2.8.7

Classify cells as eukaryotic or prokaryotic

LS.2.8.8

Identify and describe similarities and differences among organisms of different, but closely related taxa (e.g., pine trees, big cats, rodents, ungulates)

LS.2.8.9

Investigate careers, scientists, and historical breakthroughs related to organisms

LS.3.8.1

Identify and explain why inherited characteristics of living things depend on genes

LS.3.8.10

Distinguish between characteristics of plants and animals through selective breeding

LS.3.8.11

Investigate careers, scientists, and historical breakthroughs related to genetics

LS.3.8.12

Compare the theory of evolution to the characteristics of a scientific theory

LS.3.8.13

Identify basic ideas related to biological evolution: diversity of species variations within species adaptations natural selection extinction of a species

LS.3.8.14

Explain that the fossil record provides evidence of life forms appearance, diversification, and extinction

LS.3.8.15

Explain the process of natural selection

LS.3.8.16

Identify genetic traits that make organisms more likely to survive and reproduce in a particular environment

LS.3.8.17

Investigate careers, scientists, and historical breakthroughs related to natural selection and the fossil record

LS.3.8.2

Differentiate between dominant and recessive traits

LS.3.8.3

Observe and classify traits as dominant or recessive: tongue rolling detached earlobes widows peak hitchhikers thumb dimples unibrow

LS.3.8.4

Differentiate among observed inherited traits and acquired traits of plants and animals

LS.3.8.5

Interpret simple genetic crosses using Punnett Squares

LS.3.8.6

Predict patterns that emerge from simple genetic crosses

LS.3.8.7

Conduct investigations demonstrating that the phenotype of a genetic trait is the result of genotype

LS.3.8.8

Explain how genetic variation within a species is a result of dominant traits and recessive traits

LS.3.8.9

Compare and contrast patterns of embryological development for all vertebrates, including humans

LS.4.8.1

Analyze the effect of changes in environmental conditions on the survival of individual organisms and entire species

NS.1.8.1

Justify conclusions based on appropriate and unbiased observations

NS.1.8.10

Explain the role of peer review, evidence, and modification in the development of a theory

NS.1.8.11

Evaluate the merit of hypotheses, laws, and theories

NS.1.8.2

Evaluate the merits of empirical evidence based on experimental design: hypothesis replication sample size appropriate use of control use of standardized independent and dependent variables

NS.1.8.3

Formulate a testable problem using experimental design

NS.1.8.4

Analyze a set of scientific data using mean, median, mode, and range using SI units

NS.1.8.5

Suggest solutions to real world problems by analyzing scientific data in data tables/charts histograms circle graphs scatter plots stem and leaf plots line and double line graphs by approximating line of best fit

NS.1.8.6

Formulate inferences based on scientific data

NS.1.8.7

Communicate results and conclusions from scientific inquiry following peer review

NS.1.8.8

Develop and implement strategies for long-term, accurate data collection

NS.1.8.9

Generate questions that can and cannot be answered by science

PS.5.8.1

Compare the atomic theory to the characteristics of a scientific theory

PS.5.8.2

Explain the structure of atoms

PS.5.8.3

Determine the number of protons, neutrons, and electrons in an atom

PS.5.8.4

Create atomic models of common elements

PS.5.8.5

Investigate scientists, careers, and historical breakthroughs related to the atomic theory

PS.6.8.1

Model how motion and forces change Earths surface: compression tension weathering erosion

PS.6.8.2

Conduct investigations demonstrating the field force (lines of force) in magnetic fields

PS.6.8.3

Design and conduct investigations applying variables affecting the strength of an electromagnet

PS.6.8.4

Analyze and compare the relationship between electricity and magnetism

PS.6.8.5

Investigate careers, scientists, and historical breakthroughs related to motion and forces that change Earths surface

PS.7.8.1

Construct open and closed electrical circuits: series circuits parallel circuits

PS.7.8.10

Analyze the electromagnetic spectrum

PS.7.8.11

Investigate examples of real world uses of the electromagnetic spectrum

PS.7.8.12

Conduct investigations demonstrating the separation of white light into its spectrum using refraction

PS.7.8.13

Compare ways to transfer information: sound light radio microwave energy

PS.7.8.14

Investigate careers, scientists, and historical breakthroughs related to waves and the electromagnetic spectrum

PS.7.8.2

Describe and diagram open and closed series and parallel circuits

PS.7.8.3

Compare and contrast open and closed series circuits and parallel circuits

PS.7.8.4

Conduct investigations demonstrating the characteristics of a wave: wavelength frequency speed amplitude

PS.7.8.5

Conduct investigations of longitudinal and transverse waves to determine how they are different

PS.7.8.6

Explain how energy is transferred through waves: seismic waves sound waves water waves electromagnetic waves

PS.7.8.7

Describe how waves travel through different kinds of media

PS.7.8.8

Differentiate among reflection, refraction, and absorption of various types of waves

PS.7.8.9

Describe and diagram the electromagnetic spectrum