earth Science

What type of tide occurs when the Sun,Moon & Earth form a right angle?

A stream's ____or drainage system is all of land area whose water drains into stream system.

Most commonly accepted theory about the origin of the Moon explains why the Moon____

Successional process , begins with addition of nutrients & continues w/the filling of a lake

Stream system's __,or drainage basin is all of land area whose water drains into stream system

The carrying capacity of a stream depends on both the velocity & _____.

In a(n) ____universe the expansion will never stop.

For water to enter the ground, there must be______.

For water to enter the ground there must be ______.

What is Earth's average distance from the Sun: 1,496 x 10⁸km

The carrying capacity of a stream depends on both the velocity & ______

In a(n) ____universe the the expansion stops & becomes a contraction.

Stars that have periods of pulsations btwn 1.5 hrs & 1.2 days & on avrg, have same luminosity.

The path of a stream can vary considerably, depending on the slope of the land & the _____.

Radio waves are used to map the Milky Way.

Air is denser near Earth's surface than high in the atmosphere.

What percentage of the atmosphere is nitrogen?

Electricity caused by the rapid rush of air in a cumulonimbus cloud is

The Sun is the largest object in our _____.

During ice ages, Earth's climate was colder & much of its surface was covered by sheets of ice.

At times Pluto is closer to the Sun than Neptune.

Asteroids are larger than meteoroids.

Most of earth's atmosphere is composed of _____.

In a stream, how are particles such as silt, clay & sand carried?

violent downdrafts that are concentrated in one local area are____.

Extremely powerful thunderstorms that develop intense rotating updrafts are____.

the Milky Way belongs to a small cluster of galaxy the Local Group

Stars in the branch of the H-R diagram that pulsate in brightness.

One theory of how the spiral arms are maintained is _____.

Most galaxies are spread evenly throughout the universe.

Wind is the movement of air from an area of low pressure to an area of high pressure.

What are valley like features on the moons surface called?

Stars that have periods of pulsations btwn 1 day & more than 100 days.

What are long trails of ejecta on the Moon's surface called?

What process removes salt from sea water?

The rapid rotation of Saturn distorts its shape.

Evidence suggests that the universe contains a great amount of_____.

What does the type of stars in the halo & the bulge indicate?

According to Kepler's Law a planet does not maintain constant distance from the Sun.

Earth is currently experiencing warm period btwn ice ages is called an inter glacial period.

The Sun has orbited the galaxy approximately 100 times in its 5 billion life year life.

Extremely powerful thunderstorms that develop intense, rotating updrafts are_____.

Which of the following is true about watersheds?

The path of a stream can vary considerably, depending on the slope of the land & _____

What is the energy output from the surface of a star per second?

In its 5 billion year life, the sun has orbited the galaxy approximately 1000 times

If the water tables drop, shallow wells can go dry.

An air mass is small parcel of air that takes on characteristics of area over which it forms.

Evidence indicates that as much as 90% of the galaxy's mass is contained in the____.

Saturn is the only planet with rings...

What is the periodic rise & fall of sea level?

There are 55 major spiral arms & a few minor were identified in the Milky Way

What is an instrument that measures wind speed and direction?

What is the constant movement of water btwn the atmosphere & Earth's surface?

What are the 3 possible outcomes for the universe?

Population II stars are located in the halo and bulge & contain heavy elements.

Seasons are long-term periods of climate changes caused by regular variations in temperature.

What are violent downdrafts that are concentrated in one local area?

Air pressure is greater at the top of a mountain than at lower elevations.

What is a depression in the landscape that holds water?

The constant movement of water between the atmosphere & the Earth's surface is _____

Measurements of star luminosity at varied distances are a hint of the Milky Way's spiral arms.

A periodically saturated area that develops after a lake fills in with vegetation.

What is a nonrenewable resource?

Low-lying areas often located near streams that develop from filled in marshes

Pluto is not classified as a terrestrial planet because of its low density,small size..

Population I stars are located in the disk and arms.

The ____ of the universe determines the outcome of the Big Bang.

The mass located within the circle of the Sun's orbit is about ____ times the mass of the sun?1

By measuring a stars period of pulsation, astronomers can determine this.

What are the dark smooth plains on the Moon called?

The Milky Way & the Andromeda Galaxy are 2 of the smallest members of the Local Group.

An air mass takes on its source region's ___

Most Galaxies are spread evenly throughout the universe.

a depression in the landscape that collects & holds water

Direction of the center of the Milky Way is toward this constellation.

A type of lake formed when meanders get cut off

Particles of air in the atmosphere exert pressure on the Earth's surface.

Most pollution plumes spread quickly and time is available for alternate water.

Uranus was discovered accidentally in 1781

The universe began as a point & has been expanding ever since is called ____.

What did Edwin Hubble discover in the Great Nebula in the Andromeda constellation?

Solid particle in the atmosphere include salt & _____

What is a balloon-bome package of sensors that gathers upper-level weather data?

The amount of dissolved material that stream water carries is usually expressed in_____.

The amount of dissolved material that stream water carries is usually expressed in _____.

Kepler's law- says that each planet's orbit around Sun sweeps out in shape called an eclipse.

The process of water changing from a liquid to a gas_____.

The energy that drives the water cycle comes from the _____.

Stars that have on average same luminosity & pulsations between 1.5 hours and 1.2 days are __

Ozone in the earth's atmosphere is important because it_____

The difference between high & low tide

Permeable layers through which ground water flows

The zone below the surface, but above the zone of saturation, where materials are moist?

What is the ancient Greek classification system based on how bright a star appears to be?

Rotational axis of Uranus is tipped over so far, the N Pole almost lies in its orbital plane

Stream's ___ is sand & rock that the stream's water can push along bed of steam.

A stream's slope affects its carrying capacity.

What is a renewable resource?

The successional process that begins with addition of nutrients, continues w/filling of a lake

the resistance of a star's core to being squeezed stops the collapse of the core...

Powerful downdrafts that effect an area of less than 3km are

Where does the most star formation take place?

In the troposphere, as air temp increases w/decreasing altitude, usually air pressure increases

The watershed of _____ is the largest in North America.