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43 terms

Science-6th grade

6th grade flashcards (last year-2006)
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Warm air masses that affect the west coast of the United States are called
Maritime tropical
What happens when a rapidly moving cold mass runs into a slowly moving warm air mass
cold front
What type of front describes a war air mass and a cold mass meeting and no movement occurring
stationary front
When a warm air mass collides with a cold air mass it forms a
warm front
Sate the difference between cyclones and anticyclones
Cyclones are low anticyclones are high and directions of wind
A finnel-sheped cloud that torches earth's surface is called a
tornado
The number of the tornados that occur in the United States each year is about
800
To be classified as a Hurricane a tropical storm must have at least
199kl wind speed
The eye of a Hurricane
calm and peaceful and clear
How does lake-effect snow occur
cool air blows over a lard lake then over land
Where should you seek protection during a tornado
basement of tornado safe house
What is the most dangerous aspect of a snow storm
high winds
Why has weather forecasting improved
computer tect.
People who study weather and try to predict it are called
meteorologist
Where does El Nino's weather pattern form
Pacific Ocean
An El Nino event occurs every
2-7 years
Isobars are lines on a map joining place have the same
air pusher
Small lines on a map joining places that have the indivate
wind speed
On weather maps a line with half circles in considered
warm front
A cloud cover symbol that is ¾ black and ¼ white represents
mostly 70-80%
Places shown on a weather map that have the same temperature are connected by
Isptherms
A Hurricane is
a cold air mass over warm waters forms and air m movement that forms a tropical storm when the winds pick up to 119kl it is considered a Hurricane the eye of the storm is calm and peaceful but once the eye passes you get a storm surge which is the most dangerous part of the storm
Red shift
light waves from retreating objects chang to a redder color
Supernova
the explosion of a star releasing huge amounts of light and other energy
Fusion
combining of less massive elements to from more massive elements
Red giant
star that has swelled
Quasar
a far away object that resembles a star but gives off as much light as a galaxy
Solar flare
powererfull eruptions of very hot gases from the sun
Radio telescope
tool used to study radio waves from space
Pulsar
a star that gives off pulse of radio waves
Aurora
a flow of display of lights in the skies at the far Northern southern latitudes
Bid Bang Theory
an event that started the universe about 13 billion years ago
Black hole
a star of other object that has collapsed so far that no light can get out
White dwarf
a star that has collapsed to the size of the earth
Sunspot
dark region on the sun's surface
Milky Way Galaxy
a galaxy in which the solar system is located
Corona
outermost part of the sun
Optical telescope
tool used to study light
Neutron star
a star collapsed far enough to be composed only of neutrons
Solar wind
the expanding corona
Solar Flare
erupitions of fire from the surface of the sun
Nebula
dust and gas in space
Prominence
huge loop of hydrogen gas above the sun's surface