Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science STAAR > Science > Flashcards

Science Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What are galaxies

A

millions or billions of stars are held together by gravity by gas and dust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

explain the life cycle of an average star

A

it starts in the stellar nebula and goes onto average star then red giant then planetary nebula then white dwarf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

explain the life cycle of an massive star

A

it starts in the stellar nebula and goes onto massive star then red super giant then a supernova then black jole/ neutron star

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is a nebula

A

cloud of gas and dust —–> stellar nursery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is a protostar

A

gravity makes gas condense gathering mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how is a main sequence star in high and low mass

A

high- burns fuel faster(stars spend most of their time here)
low- once the temperature is hot enough it makes nuclear fusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

describe a supergiant

A

much larger than a red giant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

describe a red giant

A

hydrogen fuel depleats care contracts outer expanders

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

describe a supernova

A

core collapses rapid fusion reaction explodes energy that makes heavy elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

describe a planetary nebula

A

the outer layers of the star sheds and creates a nebula of gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

white dwarf

A

dense, earth size, gradually cools

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

black hole

A

big fat hole that has so much gravity that light can’t escape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what does the tempature for stars mean

A

blue=hot red=warm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

\what is the charge of protons neutrons and electrons and how do you find them

A

protons= positive
electrons= negative
neutrons=neutral
Atomic number=protons/electrons
Atomic mass- number= neutron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is matter and 3 examples

A

anything that takes up space ex.: tree’s air dogs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is volume

A

amount of space matter takes up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is the difference between chemical change and physical

A

chemical is when the substance changes while physical changes appearence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is force

A

A push or a pull on an object; the unit of force is the Newton (N)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is the difference between contact and non contact force

A

Contact is morre Force-touching and a example is Physical Push or Pull,

Non-Contact is long distance pull-exerted without contact a example is Magnetism, Gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is friction force

A

contact force that acts to oppose a sliding motion between surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is normal force

A

Contact force exerted by a surface onto an object

22
Q

what is spring/elastic force

A

the force a spring or rubber exerts on an object

23
Q

what is tension force

A

the pull exerted by a string, rope or cable when attached to a body and pulled tight

24
Q

what is thrust force

A

A general term for the forces that move objects such as rockets, planes, cars and people

25
Q

what is buoyant force

A

the upward force exerted by any fluid upon a body placed in it

26
Q

what is gravity/weight force

A

long range force due to gravitational attraction between 2 objects (generally the earth and a 2nd object). The Earth is pulling all objects on it toward it´s center.

27
Q

what is air resistance/drag force

A

force of friction between the air and an object traveling through the air

28
Q

what is magnetic force

A

force of attraction or repulsion between North and South Poles of a magnet

29
Q

what is Electrostatic force

A

force of attraction between positive and negative electric charges

30
Q

what is rate

A

a measurement of how much something changes in a certain unit of time

31
Q

what is speed and its formula

A

the distance an object travels in a unit of time, such as seconds
s=d/t

32
Q

what is velocity

A

a measurement that includes the speed of an object and its direction.

33
Q

what is acceleration

A

the rate of change of an object’s velocity over time.

34
Q

what is newtons 1st law

A
  • an object moving will keep moving
  • an object at rest will stay at rest
35
Q

what is newtons 2nd law

A

the acceleration of an object is in the same direction as the net force on the object.

35
Q

what is newtons 3rd law

A

“For every action there is an equal and opposite reaction.”

36
Q

what are the layers of the earth

A

crust, mantle, outer core, inner core

37
Q

what is the crust
and 2 types of it

A

the thin and solid outermost part of the Earth. Made mostly of silicon, oxygen, and aluminum. The thinnest layer of the Earth

Oceanic (the ocean floor) and Continental (dry land). Oceanic Crust is more dense and thinner than Continental crust.

38
Q

what is the mantle

A

the layer of the Earth right underneath the crust. It is the thickest and largest layer. Made of aluminum, silicon, magnesium, and some iron. The uppermost part of the mantle is solid. Most of the mantle thought has a fudgy consistency. It is where magma comes from.

39
Q

what is the outer core

A

layer of the Earth underneath the Mantle. Made of liquid iron and nickel.

40
Q

what is the inner core

A

innermost layer of the Earth under the outer core. It is made of solid iron and nickel. It is the densest layer of the Earth

41
Q

what is the lithosphere

A

the solid, outermost layer of the Earth that consists of the crust and the rigid solid upper part of the mantle.

42
Q

what is the asthenoshpere

A

the soft fudgy layer of the mantle on which the lithosphere floats on.

43
Q

what are convection currents

A

the transfer of heat by a fluid (liquid or gas)

44
Q

what are plate boundaires

A

Location where two tectonic plates meet

Changes to Earth’s surface occur near plate boundaries

45
Q

what are the different type of plate boundaries

A

3 types of plate boundaries – Convergent, Divergent, and Transform

46
Q

what is convergent boundry
and what happens when different types of crusts collide

A

When two plates are moving toward one another

Old crust is destroyed/recycled

This is when the plates converge (collide)

continental vs. continental
When two continental crustal plates collide
The continents buckle upward and form mountains.

oceanic vs.contienental

The more dense oceanic plate subducts under the less dense continental plate.
The continental plate sinks into the asthenosphere (upper mantle) where it is melted back into magma.
Forms volcanoes, volcanic arcs and/or trench.

oceanic vs. oceanic

Two oceanic plates collide
The more dense oceanic plate subducts under the less dense one.
Forms a volcanic island, volcanic island arc and/or a trench
Also called a subduction zone

47
Q

what is divergent boundary
and what happens when different types of crusts collide

A

When two plates are moving away from one another

Magma rises and spills out from under the plates, making new crust

Sometimes referred to as sea floor spreading

Land form(s) created: mid-ocean ridge or rift valley

continental vs. continental
When two continental crustal plates collide
The continents makes a ridge

48
Q

what is a transform boundry

A

When two tectonic plates slide past each other
Movement between two plates is not smooth; pieces of plates get “stuck”, when they break away from one another the built up energy is released
Produces faults and Earthquakes

49
Q

What is a tophographic map

A

three-dimensional arrangement of physical attributes (such as shape, height, and depth) of a land surface in a place or region.

50
Q

how does heat transfer to us and what is the main source

A

conduction convection radiation
our main source is the sun

Science STAAR (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions