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Science Flashcards

1
Q

The most important thing a teacher can do for students in a science class is

A

Encourage inquiry

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2
Q 
Observe
Classify
Predict
Hypothesize 
Investigate are part of what?
A

Scientific method

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3
Q

An element manipulated in the experiment

A

Independent variable

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4
Q

What the scientist is measuring in an experiment

A

Dependent variable

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5
Q

The elements of the experiment that a scientist wants to remain the same and it must be observed carefully

A

Control variable

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6
Q

How do you find out mass of an object

A

Mass=density X volume

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7
Q

How do you find out the volume

A

Mass
Volume = ————————
Density

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8
Q

How do you find out density

A

Mass
Density = ————————
Volume

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9
Q

What are the two types of mixtures

A

Homogeneous and heterogeneous

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10
Q

What is the smallest part of an element called

A

Atom

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11
Q

Negatively charged subatomic particles that circle around an atoms nucleus

A

Electrons

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12
Q

Neutrally charged subatomic particle that are located in the nucleus

A

Neutrons

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13
Q

Positively charged subatomic particles that are located in the atoms nucleus

A

Protons

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14
Q

Smallest particle in a chemical element or compound that has the chemical properties of that element or compound

A

Molecule

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15
Q

Charged element or molecule that has lost or gained one or more electrons

A

Ions

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16
Q

Two or more forms of the same element that have the same number of protons but a different number of neutrons

A

Isotopes

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17
Q

Transfer of heat by the actual movement of the warmed matter

A

Convection

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18
Q

Transfer of heat from particle to particle.

A

Conduction

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19
Q

Formations formed as a result of earths tectonic plates smashing together

A

Mountains

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20
Q

Formations that are formed when magma from within earths upper mantle erupts through the surface

A

Volcanoes

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21
Q

Formations that are formed by weathering and erosion caused by the movement of rivers and tectonic activity

A

Canyons

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22
Q

Divergent

A

Pulling apart

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23
Q

Convergent

A

Coming together

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24
Q

Subduction

A

Sideways and downward movement of the edge of a plate into the mantle beneath another plate

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25
What three categories are rocks mainly grouped into
Igneous sedimentary Metamorphic
26
The outermost shell of earth. Aka the crust
Lithosphere
27
All the water on earth in liquid form
Hydrosphere
28
The global sum of all ecosystems and living organisms
Biosphere
29
The masses of frozen water
Cryosphere
30
Seasons are the result of earths...
Tilt on its axis
31
What does the heliocentric theory believe
The sun is at the center of the universe
32
What does the geocentric theory state
Believed that earth sat stationary at the center of the universe.
33
When talking about moon illumination Waxing = Waning=
``` Waxing = illuminated in the right side Waning= illuminated on the left side ```
34
The ____ occurs when the moon passes directly behind earth into its shadow
Lunar eclipse
35
The ____ happens when the moon moves in front of the sun
Solar eclipse
36
A chunk of ice and rock originating outside of the solar system
Comet
37
Chunk of rock and metal in orbit in between Mars and Jupiter
Asteroids
38
A small asteroid is known as
Meteorite
39
Where are aquifers located
Beneath earths crust
40
What happens during a solar eclipse
The moon moves in front of the sun relative to earth
41
Which planet is closest in size and density to earth
Venus
42
Gravity is responsible for
Earths orbit
43
This type of rock was originally liquid below earths crust and is forms by lava and magma
Igneous
44
This area is located around the outer edge of the Pacific Ocean and is where most volcanic activity occurs
Ring of fire
45
What is the densest part of earth
Earth core
46
A unicellular organism that lacks a nucleus, mitochondria, or any other membrane bound organelle
Prokaryote
47
A multicellular organism that contains a nucleus, mitochondria, and membrane bound organelles
Eukaryote
48
Fluid, Permeable outside covering of the cell.
Cell wall
49
Water like substance in the cell
Cytoplasm
50
What do plant cells have that animal cells do no have
Plant cells have chloroplast and cell walls Animal cells have plasma membranes and no chloroplast
51
The classification of living things was first done by
Carl Linnaeus
52
A eukaryote that doesn’t make its own food and that doesn’t contain cells with a cell wall is an
Animalia
53
During this stage of mitosis, chromosomes line up in the idle of the cell and spindle fibers attach to the center of the chromosomes
Metaphase
54
Sometimes during cell division sex cells contain three copies of chromosomes instead of two. This results in
Trisomy
55
A symbolic relationship where both organism benefit is called
Mutualism
56
The term used to refer to a plan growing toward light
Phototropism
57
What type of lens explains how a microscope works
Reflective
58
A student scores in the 75 percentile on a national science test. What type of assessment did the student take
Norm referenced
59
Before scientists can perform an experiment on human subjects, scientist must:
Obtain informed consent
60
In a lunar eclipse what is the order of the earth sun and moon
Sun, earth, moon
61
What causes earths magnetism
The inner and outer core rotation
62
What happens when warmer, lighter air at the equator moves toward the cooler air at the poles
Convection currents
63
During the scientific revolution, Copernicus introduced this theory where the Earth revolves around the sun
Heliocentric
64
In the energy pyramid which section contains the most energy
The very bottom
65
The brain and spinal cord make up what system
The nervous system
66
There are herbivores that eat the producers in a food web
Primary consumers
67
Why is there no vaccine for the common cold
The common cold is caused by nearly 250 different viruses
68
Scientist classify living things. What scientist is responsible for this classification system
Linnaeus
69
_____ make their own food
Autotrophs
70
Before a cell can divide, the DNA must go through this process
DNA replication

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