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AqSicence Final Practice

Total questions: 60

Worksheet time: 33mins

Name
Class
Date
1.

What percentage of Earth's atmosphere is composed of Nitrogen?

a)

21%

b)

0.9%

c)

78%

d)

0.1%

2.

Which layer of the atmosphere is closest to Earth and is where weather occurs?

a)

Stratosphere

b)

Troposphere

c)

Mesosphere

d)

Thermosphere

3.

What is the primary driver of weather systems, wind, and ocean currents?

a)

Earth's geothermal activity

b)

The Moon's gravitational pull

c)

The Sun

d)

Human industrial emissions

4.

The Coriolis effect causes moving objects in the Southern Hemisphere to be deflected to the:

a)

Right

b)

Left

c)

East

d)

West

5.

Which global wind pattern is found approximately between 0-30° latitude and blows towards the equator?

a)

Prevailing Westerlies

b)

Polar Easterlies

c)

Trade Winds

d)

Monsoons

6.

Large, circular loops of wind-driven surface currents that travel clockwise in the Northern Hemisphere are called:

a)

Eddies

b)

Tides

c)

Gyres

d)

Convection cells

7.

The net movement of water due to Ekman Transport is typically at what angle to the wind direction in the Southern Hemisphere?

4 lines
8.

Which phenomenon ceases upwelling in the Pacific and can lead to increased storms and rainfall on land?

a)

La Niña

b)

The Gulf Stream

c)

El Niño–Southern Oscillation (ENSO)

d)

Thermohaline Circulation

9.

The zone in the ocean where there is a rapid change in temperature over a small depth interval is known as the:

a)

Epipelagic zone

b)

Bottom layer

c)

Thermocline

d)

Halocline

10.

According to the Big Bang Theory, approximately how old is the Earth?

a)

4.5 million years

b)

1 billion years

c)

4.5 billion years

d)

10 billion years

11.

Which part of Earth's internal structure is a fluid-like upper part of the mantle?

a)

Inner Core

b)

Lithosphere

c)

Outer Core

d)

Asthenosphere

12.

Oceanic crust is primarily composed of which type of rock?

a)

Granite

b)

Sandstone

c)

Basalt

d)

Limestone

13.

Alfred Wegener proposed the theory of continental drift, which included the idea of a supercontinent named:

a)

Rodinia

b)

Gondwana

c)

Pangea

d)

Laurasia

14.

What is the largest geological feature on Earth, entirely volcanic, and encircles the globe underwater?

a)

The Mariana Trench

b)

The Himalayan Mountains

c)

The Mid-Ocean Ridge

d)

The Great Barrier Reef

15.

Symmetrical patterns of magnetic anomalies (stripes) on either side of mid-ocean ridges are evidence for:

a)

The constant strength of Earth's magnetic field

b)

The Earth's core being entirely solid

c)

Sea-floor spreading and magnetic field reversals

d)

The immediate cooling of all volcanic rock

16.

Lithogenous sediments found on the ocean floor originate from:

a)

Shells and skeletons of marine organisms

b)

Weathered down rock

c)

Volcanic eruptions exclusively at mid-ocean ridges

d)

Extraterrestrial meteorites

17.

The process where an oceanic plate descends into the mantle beneath another plate is called:

a)

Rifting

b)

Sea-floor spreading

c)

Subduction

d)

Transform faulting

18.

What type of plate boundary occurs when plates slide past each other horizontally, often causing earthquakes?

a)

Convergent boundary

b)

Divergent boundary

c)

Subduction zone

d)

Transform boundary

19.

In a water molecule (H₂O), what type of bond holds the hydrogen atoms to the oxygen atom?

a)

Ionic Bond

b)

Hydrogen Bond

c)

Covalent Bond

d)

Metallic Bond

20.

The polarity of water molecules, where the oxygen end is slightly negative and the hydrogen ends are slightly positive, is due to:

a)

Equal sharing of electrons between oxygen and hydrogen

b)

The presence of dissolved salts in water

c)

Uneven sharing of electrons between oxygen and hydrogen

d)

The high heat capacity of water

21.

The attraction between water molecules, causing them to stick to each other, is known as:

a)

Adhesion

b)

Cohesion

c)

Viscosity

d)

Surface Tension

22.

Water's ability to allow small insects to walk on its surface is primarily due to its high:

a)

Viscosity

b)

Heat capacity

c)

Surface tension

d)

Density

23.

The amount of heat it takes to raise the temperature of 1 gram of water by 1°C is defined as one:

a)

Joule

b)

Watt

c)

Calorie

d)

Newton

24.

When water freezes, it expands. This is because:

a)

The water molecules gain kinetic energy.

b)

Hydrogen bonds lock the water molecules into a fixed, open lattice structure.

c)

The density of water increases upon freezing.

d)

Air bubbles become trapped within the ice.

25.

Water's high heat capacity means it can:

a)

Freeze very quickly.

b)

Boil at a relatively low temperature.

c)

Absorb a large amount of heat without a large increase in its own temperature.

d)

Dissolve only non-polar substances.

26.

Why is water considered the "universal solvent"?

a)

It is found everywhere on Earth.

b)

It can dissolve more substances than any other natural liquid.

c)

All life requires water to survive.

d)

It is perfectly neutral with a pH of 7.0.

27.

The bonds between the oxygen and hydrogen atoms within a single water molecule are _____ than the hydrogen bonds between adjacent water molecules.

a)

Weaker

b)

Stronger

c)

Equal in strength

d)

Non-existent

28.

The transparency of seawater is crucial for marine ecosystems because it allows:

a)

Sound to travel faster.

b)

Salts to dissolve easily.

c)

Sunlight to penetrate for photosynthesis by organisms.

d)

Pressure to remain constant with depth.

29.

With every 10 meters of depth in the ocean, the pressure increases by approximately:

a)

0.1 atmosphere

b)

1 atmosphere

c)

5 atmospheres

d)

10 atmospheres

30.

Which of these factors generally increases the speed of sound in seawater?

a)

Decreased temperature

b)

Decreased salinity

c)

Increased pressure

d)

Increased cloud cover

31.

The total amount of salt dissolved in seawater is known as:

a)

Density

b)

pH

c)

Salinity

d)

Solubility

32.

Sodium and chloride make up approximately what percentage of the solutes in seawater?

a)

25%

b)

50%

c)

85%

d)

99%

33.

The "Rule of Constant Proportions" states that:

a)

All oceans have the exact same salinity value.

b)

The major dissolved ions in seawater occur everywhere in the same proportions.

c)

Temperature is always proportional to salinity.

d)

The density of seawater never changes.

34.

Which of these processes would lead to an increase in local seawater salinity?

a)

Heavy precipitation

b)

Melting of polar ice caps

c)

River runoff

d)

Evaporation

35.

The density of seawater is primarily controlled by:

a)

Wind speed

b)

The amount of dissolved oxygen

c)

Temperature

d)

The presence of marine life

36.

Ocean acidification is caused by the ocean absorbing excess ______ from the atmosphere, leading to a decrease in pH.

a)

Oxygen

b)

Nitrogen

c)

Carbon Dioxide

d)

Sulfur Dioxide

37.

The movement of molecules from an area of high concentration to an area of low concentration is called:

a)

Osmosis

b)

Active transport

c)

Diffusion

d)

Pinocytosis

38.

A cell membrane that allows some substances to pass through but blocks others is described as:

a)

Impermeable

b)

Fully permeable

c)

Selectively permeable

d)

Actively transporting

39.

What process allows cells to move materials against their concentration gradient, requiring energy (ATP)?

a)

Diffusion

b)

Osmosis

c)

Active transport

d)

Facilitated diffusion

40.

An organism like a jellyfish, whose internal solute concentration fluctuates with the salinity of the surrounding seawater, is an example of an:

a)

Osmoregulator

b)

Ectotherm

c)

Osmoconformer

d)

Endotherm

41.

An organism that maintains a stable internal body temperature regardless of the external temperature is called a:

a)

Ectotherm

b)

Homeotherm

c)

Osmoconformer

d)

Poikilotherm

42.

Marine mammals often have a thick layer of blubber, which serves as insulation. This is an adaptation primarily for:

a)

Buoyancy

b)

Camouflage

c)

Temperature regulation (maintaining body heat)

d)

Resisting water pressure

43.

The streamlined body shape of many fast-swimming marine animals like tuna or dolphins is an adaptation to reduce:

a)

Heat loss

b)

The effects of water pressure

c)

Water resistance due to viscosity

d)

Salt intake through the skin

44.

Some deep-sea organisms have very large eyes. This is likely an adaptation for:

a)

Detecting bioluminescent prey or mates in dim light

b)

Withstanding high pressure

c)

Filtering plankton from the water

d)

Navigating by stars

45.

Many fish possess a gas-filled sac called a swim bladder, which helps them control:

a)

Their body temperature

b)

Their digestion rate

c)

Their buoyancy

d)

Their salt balance

46.

The ozone layer is primarily found in the Troposphere.

a)

True

b)

False

c)

It is primarily found in the Mesosphere.

d)

It is not found in any specific layer.

47.

Deep ocean currents are primarily driven by wind.

a)

True

b)

False

c)

They are primarily driven by the moon's gravity.

d)

They are primarily driven by seismic activity.

48.

Continental crust is generally thinner and younger than oceanic crust.

a)

True

b)

False

c)

It is thicker and younger than oceanic crust.

d)

It has the same thickness and age as oceanic crust.

49.

When a salt crystal is added to water, the ionic bonds of the salt are strengthened by the water molecules.

a)

True

b)

False

c)

The covalent bonds of the salt are strengthened.

d)

Water molecules form new, stronger ionic bonds with each other.

50.

Carbon dioxide is less soluble in seawater than oxygen.

a)

True

b)

False

c)

They have nearly identical solubility in seawater.

d)

Neither gas is significantly soluble in seawater.

51.

Active transport requires a cell to expend energy (ATP).

a)

True

b)

False

52.

An ectotherm generates significant metabolic heat to maintain a body temperature higher than its surroundings.

a)

True

b)

False (Correct Answer)

c)

Ectotherms use blubber for heat generation.

d)

Ectotherms always have a body temperature lower than their surroundings.

53.

The tendency for the path of a moving object to shift to the right in the Northern Hemisphere is due to the _____ effect.

a)

Convection

b)

Coriolis

c)

Gyre

d)

Subduction

54.

_____ cells in the atmosphere are formed by the rising of warm, less dense air and the sinking of cooler, denser air.

a)

Coriolis

b)

Thermohaline

c)

Convection

d)

Gyre

55.

The _____ is the rigid outer layer of Earth that includes the crust and the upper-most portion of the mantle.

a)

Asthenosphere

b)

Troposphere

c)

Lithosphere

d)

Atmosphere

56.

The attraction of water molecules to other water molecules due to hydrogen bonds is known as _____

a)

Viscosity

b)

Osmosis

c)

Cohesion

d)

Solubility

57.

The measure of a fluid's resistance to flow is called _____

a)

Density

b)

Salinity

c)

Viscosity

d)

Cohesion

58.

The global circulation pattern driven by differences in temperature and salinity is known as _____ circulation.

a)

Convection

b)

Gyre

c)

Thermohaline

d)

Coriolis

59.

The diffusion of water across a selectively permeable membrane is called _____

a)

Diffusion

b)

Cohesion

c)

Osmosis

d)

Viscosity

60.

The layering of seawater based on differences in temperature and salinity is known as stratification, which is a result of varying.

a)

Salinity

b)

Viscosity

c)

Density

d)

Solubility