NY Regents Earth Science Exam Flashcards

Q: What is on the Earth and Space Sciences Regents and how is it formatted?

NYSED's current Regents Examination in Earth and Space Sciences uses 9-11 phenomenon-based question clusters with 45-55 total questions, about 60% multiple-choice and 40% constructed-response. Each cluster gives a storyline with passages, diagrams, data tables, graphs, or photos, and many questions require interpreting data and using the reference tables rather than recalling isolated facts.

Q: What score do I need to pass the Earth Science Regents?

A scale score of 65 is the Regents passing standard. NYSED stresses this is a scaled score tied to the learning standards, not 65 percent of questions answered correctly, so the number of raw points needed to reach 65 can vary from one administration to another.

Q: How long is the exam and are lab requirements involved?

Students are permitted three hours for the written test. Students taking the new NYSP12SLS-aligned Earth and Space Sciences exam must successfully complete required science Investigations before sitting the written test, though Investigation scores are not reported to the State. Students still taking the legacy Physical Setting/Earth Science exam during the transition complete the older laboratory performance test instead.

Q: What are the Earth Science Reference Tables and can I use them on the exam?

The Reference Tables (ESRT) are a NYSED-provided booklet of charts, maps, scales, and equations given to every student during the exam. You are expected to use them constantly to look up values, identify minerals and rocks, calculate gradient and density, read the geologic time scale, and find equation values. Knowing where each chart is and how to read it is one of the most heavily rewarded skills on the test.

Q: Which reference tables should I use, and is the exam transitioning?

New York is transitioning from the legacy Regents Examination in Physical Setting/Earth Science to the NYSSLS-aligned Regents Examination in Earth and Space Sciences. Students taking the new exam use the 2024 Reference Tables for Earth and Space Sciences, while students still completing the legacy course use the older Physical Setting/Earth Science reference tables. Confirm with your teacher which course and which table edition you are preparing for.

Q: Does this flashcard set copy real Regents questions?

No. These cards are original active-recall prompts aligned to NYSED's published topics, reference-table skills, and Earth-systems reasoning. They are written to teach concepts and distinctions, not to reproduce any released NYSED exam question.

Question 1

Three families of rock in the rock cycle

Accepted Answer

Igneous (cooled from magma/lava), sedimentary (compacted/cemented sediment or precipitated chemicals), and metamorphic (existing rock changed by heat and pressure without fully melting). Any rock can become any other family over time.

Question 2

Intrusive vs. extrusive igneous rock: how does cooling rate change texture?

Accepted Answer

Slow underground cooling gives crystals time to grow large, producing coarse-grained intrusive rock (e.g., granite). Fast surface cooling gives fine grains or glass, producing extrusive rock (e.g., basalt). Crystal size records cooling rate.

Question 3

Cleavage vs. fracture in minerals

Accepted Answer

Cleavage is breakage along flat, repeating planes of weakness in the crystal structure (e.g., mica sheets, halite cubes). Fracture is irregular breakage (e.g., quartz). The difference reflects internal atomic arrangement.

Question 4

Why is streak more reliable than surface color for mineral ID?

Accepted Answer

Surface color varies with impurities and weathering, but streak (the color of the powdered mineral on a streak plate) is consistent. Hematite can look silver or red yet always leaves a reddish-brown streak.

Question 5

What controls which minerals a rock contains and how is composition shown on the ESRT?

Accepted Answer

Cooling environment and source magma control mineral content. The ESRT 'Scheme for Igneous Rock Identification' links texture, color/density, and mineral composition (felsic to mafic) so you can name a rock from its grain size and minerals.

Question 6

Evidence Wegener and later scientists used for plate tectonics

Accepted Answer

Matching continental coastlines, matching fossils and rock types across oceans, mid-ocean ridges, seafloor age symmetry, magnetic stripe reversals, and earthquake/volcano belts. Together they show plates move on the asthenosphere.

Question 7

Divergent vs. convergent vs. transform boundaries

Accepted Answer

Divergent: plates move apart, new crust forms (mid-ocean ridge). Convergent: plates collide; denser plate subducts, building trenches, mountains, and volcanoes. Transform: plates slide past each other, causing earthquakes (e.g., San Andreas).

Question 8

What drives plate motion?

Accepted Answer

Mantle convection: heat from Earth's interior makes warm, less-dense rock rise and cool, denser rock sink, dragging the rigid plates above. Ridge push and slab pull at subduction zones also contribute.

Question 9

Why does an aging volcanic island chain trace plate motion (hot spots)?

Accepted Answer

A hot spot stays roughly fixed in the mantle while the plate slides over it. Each volcano is carried away and goes extinct, so islands grow older with distance from the active vent—recording the plate's direction and speed.

Question 10

Why don't S-waves pass through Earth's outer core?

Accepted Answer

S-waves are shear waves and cannot travel through liquids. Their absence on the far side of Earth (the S-wave shadow zone) is the main evidence that the outer core is liquid. P-waves slow but still pass through it.

Question 11

Locating an earthquake epicenter with the ESRT

Accepted Answer

Use the ESRT P-wave/S-wave travel-time graph: the gap between P and S arrival times gives distance to the epicenter. Three stations' distance circles intersect at the epicenter (triangulation). One station gives distance only, not direction.

Question 12

Physical vs. chemical weathering

Accepted Answer

Physical (mechanical) weathering breaks rock into smaller pieces without changing its minerals—e.g., frost wedging, abrasion. Chemical weathering changes mineral composition—e.g., oxidation (rust), carbonic-acid dissolution of limestone.

Question 13

Which climate weathers rock fastest, and why does it differ by process?

Accepted Answer

Warm, humid climates speed chemical weathering (heat plus abundant water drive reactions). Cold climates with repeated freeze-thaw favor physical (frost) weathering. Hot, dry deserts weather slowly because little water is available.

Question 14

Weathering vs. erosion vs. deposition

Accepted Answer

Weathering breaks rock in place. Erosion moves the weathered sediment by water, wind, ice, or gravity. Deposition drops the sediment when the transporting agent loses energy. They are three sequential steps.

Question 15

How do particle size, shape, and density affect settling in water?

Accepted Answer

Larger, denser, rounder particles settle first as water slows; small, light, flat particles stay suspended longest. So a slowing stream deposits gravel before sand before clay, producing sorted, often graded layers.

Question 16

Stream velocity vs. erosion: where is a stream fastest?

Accepted Answer

Velocity is highest on steep gradients and on the outside of meander bends, where erosion dominates. On the inside of bends and where the channel flattens, water slows and deposits sediment (point bars).

Question 17

Porosity vs. permeability

Accepted Answer

Porosity is the percentage of open pore space in a material. Permeability is how easily water flows through connected pores. Clay can be highly porous yet nearly impermeable because its tiny pores are poorly connected.

Question 18

Glacial evidence in a landscape

Accepted Answer

U-shaped valleys, polished and striated (scratched) bedrock, erratics (out-of-place boulders), and unsorted till/moraines all indicate past glaciers. Streams instead carve V-shaped valleys and deposit sorted sediment.

Question 19

What controls whether a landscape is a mountain, plateau, or plain?

Accepted Answer

Underlying rock structure and the balance of uplift vs. erosion. Plateaus have flat-lying resistant rock at high elevation; mountains have folded/faulted or uplifted rock; plains are low, flat regions of gentle gradient and weak relief.

Question 20

Reading a topographic (contour) map: spacing and gradient

Accepted Answer

Closely spaced contour lines mean a steep slope; widely spaced lines mean gentle terrain. Gradient = change in field value / distance, using the ESRT gradient equation. Contour lines never cross and bend upstream (V points uphill) across streams.

Question 21

What primarily drives Earth's weather and atmospheric circulation?

Accepted Answer

Unequal solar heating of Earth's surface. Differences in heating create temperature, density, and air-pressure differences, which generate winds, evaporation, and storms. Earth's internal heat affects geology, not day-to-day weather.

Question 22

Relative humidity and dew point: when does condensation begin?

Accepted Answer

Relative humidity is how full the air is with vapor compared with its capacity at that temperature. When air cools to its dew point (temperature = dew point), it reaches 100% saturation and water vapor condenses into clouds, fog, or dew.

Question 23

Cold front vs. warm front: weather differences

Accepted Answer

A cold front shoves dense cold air under warm air, lifting it steeply for brief, intense storms, then cooler/drier air. A warm front slides warm air gently over cold air, giving widespread, longer-lasting light precipitation, then warming.

Question 24

High-pressure vs. low-pressure systems

Accepted Answer

High pressure: sinking air, clockwise outward winds (N. Hemisphere), usually clear, dry, fair weather. Low pressure: rising air, counterclockwise inward winds, clouds and precipitation. Air moves from high toward low pressure.

Question 25

Why does air pressure decrease with altitude?

Accepted Answer

Pressure is the weight of overlying air. Higher up, less atmosphere sits above you, so the air presses down with less force. This is why mountaintops have lower pressure (and thinner air) than sea level.

Question 26

Latent heat in storms: what happens when vapor condenses?

Accepted Answer

Condensation releases stored latent heat into the surrounding air. That energy warms the air, encourages more rising, and fuels cloud and storm growth—an important energy source for thunderstorms and hurricanes.

Question 27

Land breeze vs. sea/lake breeze

Accepted Answer

By day, land heats faster than water; warm air over land rises and cooler air flows in from the water (sea/lake breeze). At night land cools faster, so the flow reverses and air moves from land toward water (land breeze).

Question 28

Reading a station model on a weather map

Accepted Answer

A station model packs many variables around one point: temperature and dew point (left), pressure (upper right, coded), present weather, cloud cover (shaded circle), and a wind barb showing direction (from) and speed (flags/feathers).

Question 29

Major factors that control a region's climate

Accepted Answer

Latitude (sun angle), elevation, proximity to large bodies of water, ocean currents, prevailing winds, and mountain barriers (windward = wet, leeward = dry rain shadow). Latitude is usually the strongest single control.

Question 30

Albedo and the ice-albedo feedback

Accepted Answer

Albedo is the fraction of sunlight a surface reflects. Snow and ice are high-albedo (reflective); dark ocean and forest are low-albedo (absorbing). Melting ice exposes darker surfaces, which absorb more heat and melt more ice—a reinforcing feedback.

Question 31

Weather vs. climate—why the distinction matters

Accepted Answer

Weather is the atmosphere's short-term, day-to-day state; climate is the long-term average (decades) of weather for a region. A single cold day does not disprove a warming climate trend, which is based on long-term data.

Question 32

What really causes Earth's seasons?

Accepted Answer

Earth's axis stays tilted ~23.5 degrees as it revolves, so each hemisphere alternately tilts toward or away from the Sun. This changes sun angle and daylight length—not Earth's distance from the Sun (we're actually nearest in January).

Question 33

Rotation vs. revolution

Accepted Answer

Rotation is Earth spinning on its axis (~24 hours), causing day/night and the apparent east-to-west motion of the Sun and stars. Revolution is Earth orbiting the Sun (~365.25 days), causing the yearly cycle and seasonal changes.

Question 34

Why does the Moon show phases?

Accepted Answer

The Sun always lights half the Moon. As the Moon orbits Earth (~29.5 days), we see different fractions of that lit half, from new to full and back. Phases are NOT caused by Earth's shadow—that's a lunar eclipse.

Question 35

Solar eclipse vs. lunar eclipse alignment

Accepted Answer

Solar eclipse: Moon passes between Sun and Earth (new Moon), casting its shadow on Earth. Lunar eclipse: Earth passes between Sun and Moon (full Moon), and Earth's shadow falls on the Moon. Both require near-perfect alignment.

Question 36

Why are spring tides larger than neap tides?

Accepted Answer

Spring tides (largest range) occur at new and full Moon when Sun and Moon align, combining their gravity. Neap tides (smallest range) occur at first/third quarter when the Sun and Moon pull at right angles and partly cancel.

Question 37

Star color and the H-R diagram

Accepted Answer

Star color reveals surface temperature: blue/white = hottest, red = coolest. A Hertzsprung-Russell diagram plots luminosity vs. temperature, grouping stars into the main sequence, giants, supergiants, and white dwarfs.

Question 38

Redshift as evidence for an expanding universe

Accepted Answer

Light from distant galaxies is shifted toward longer (red) wavelengths, showing they are moving away from us. More distant galaxies recede faster—evidence supporting the expanding-universe and Big Bang models.

Question 39

Why do inner planets orbit faster than outer planets?

Accepted Answer

Planets closer to the Sun travel shorter orbital paths and feel stronger gravity, giving higher orbital speeds and shorter periods. Mercury orbits in months; Neptune takes about 165 years (Kepler's laws of motion).

Question 40

What does the ESRT 'Solar System Data' chart let you compare?

Accepted Answer

It lists each planet's distance from the Sun, period of revolution and rotation, diameter, mass, density, and number of moons. Use it to compare planets, spot terrestrial vs. gas giants by density, and answer orbit-speed questions.

Question 41

Law of superposition

Accepted Answer

In an undisturbed sequence of sedimentary layers, the oldest rocks are at the bottom and the youngest at the top. Folding, faulting, or overturning can disturb this order, so check for tilting before applying it.

Question 42

Cross-cutting relationships

Accepted Answer

A feature that cuts across rock—such as a fault or an igneous intrusion—must be younger than the rock it cuts, because the rock had to exist first. This pairs with superposition to order geologic events.

Question 43

What is an unconformity?

Accepted Answer

A buried erosional surface or gap representing missing time when rock was eroded or never deposited. It signals that part of the rock record is absent, so events between the layers cannot be read directly.

Question 44

What makes a good index fossil?

Accepted Answer

A species that was geographically widespread but existed for only a short span of geologic time. Both traits let geologists correlate and date rock layers in different places. The ESRT shows New York index fossils by time period.

Question 45

Half-life and absolute (radiometric) dating

Accepted Answer

A half-life is the time for half of a radioactive parent isotope to decay to daughter product. After two half-lives, 1/4 of the parent remains; after three, 1/8. The parent-to-daughter ratio gives a rock's absolute age in years.

Question 46

Reading the ESRT Geologic History scale: how is New York's past organized?

Accepted Answer

The 'Geologic History of New York State' chart shows eras and periods, their age boundaries (in millions of years), index fossils, major life forms, and tectonic/mountain-building events—letting you place a fossil or event in geologic time.

Question 47

Calculating density with the ESRT equation

Accepted Answer

Density = mass / volume (from the ESRT Equations page). It identifies materials and explains why denser oceanic plates subduct beneath continental plates, why mafic igneous rock is denser than felsic, and why warm air rises.

Question 48

Using the ESRT 'Properties of Common Minerals' chart

Accepted Answer

It lists minerals by hardness, cleavage/fracture, color, luster, streak, and use, plus their chemical composition and the rock(s) they form. Match observed properties to a row to identify an unknown mineral.

Question 49

What the ESRT generalized landscape, bedrock, and weather-map sections provide

Accepted Answer

Maps of New York landscape regions and surface bedrock, plus charts for relative humidity/dew point, weather symbols, planetary winds, and the electromagnetic spectrum. Knowing each chart's location saves time on cluster questions.

Question 50

Exam format facts to know before test day

Accepted Answer

Earth and Space Sciences Regents: 9-11 phenomenon clusters, 45-55 questions (~60% multiple-choice, ~40% constructed-response), 3 hours, passing scale score of 65. New-exam students must finish required Investigations first; the legacy Physical Setting exam still uses the older reference tables and lab performance test during the transition.

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