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Audrey Final Reveiw > Science 7H > Flashcards

Science 7H Flashcards

(120 cards)

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1
Q

Waves move what from one place to another?

A

Energy

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2
Q

Mechanical Waves need what to travel through?

A

A medium

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3
Q

What is the amplitude of a wave?

A

The height of a wave
Length between the resting point and crest of a wave
Tells the amount of energy in a wave

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4
Q

What is the wavelength of a wave?

A

The distance between two troughs or two crests

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5
Q

What is the crest/peak of a wave?

A

The highest point or top of a wave

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6
Q

What is the trough of a wave?

A

The bottom or lowest point of a wave

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7
Q

What is the frequency of the wave?

A

Tells how many waves pass through a point in a certain time.

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8
Q

What is it when waves interfere?

A

They combine with other waves.

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9
Q

Do light waves need a matter to travel through?

A

N0 :)

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10
Q

What is the only electromagnetic waves that humans can see?

A

Light waves

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11
Q

What waves don’t need a matter to travel through?

A

Electromagnetic waves

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12
Q

Electromagnetic spectrum contains what kind of waves?

A

Electromagnetic waves.

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13
Q

All electromagnetic waves travel at the speed of _____________

A

Light

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14
Q

What is the only part of the electromagnetic spectrum that humans can see?

A

Visible light.

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15
Q

Which part of the electromagnetic spectrum has the LONGEST WAVELENGTH and LOWEST FREQUENCY

A

Radio Waves

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16
Q

As wavelength increases…

A

Frequency decreases

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17
Q

If temperature increases…

A

Waves move faster

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18
Q

In a longitudinal wave, the waves move forward and the particles of the slinky move ___________ to the waves motion.

A

Parallel

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19
Q

What waves are longitudinal and transverse

A

Water waves.

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20
Q

Number of waves that pass through a point per second

A

Frequency

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21
Q

Up and down waves

A

Transverse waves

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22
Q

Slinky waves

A

Longitudinal waves

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23
Q

What waves can travel through empty space and matter

A

Electromagnetic waves

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24
Q

Which state of matter will waves go through the FASTESTTT

A

Solid

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25
What part of the wave tells how much energy there is in a wave
Amplitude
26
Difference between light and sound waves
Light waves are the fastest and don't need a medium to travel through (EM) Sound waves are slower (But get faster in a solid or in higher temperatures) and NEED A MEDIUM (M)
27
What is the ONLY part of the Electromagnetic Spectrum that we can see?
VISIBLE light
28
Each color has a different ________ in the Electromagnetic Spectrum
Wavelength
29
What color has the LONGEST wavelength?
Red
30
What color has the SHORTEST wavelength?
Violet
31
Visible light travels in _______
Waves
32
RMIVUXG - Electromagnetic Radiation (Spectrum)
Radio waves Microwaves Infrared waves Visible light waves Ultraviolet waves X-Rays Gamma Rays
33
Vacuum
Empty space
34
An apple looks red since it ...
REFLECTS RED light and ABSORBS THE OTHER COLORS
35
Reflection
Bounces off a surface
36
Transmission
Goes strait through
37
Refraction
Bends as it goes through another material
38
Absorbtion
Gets absorbed/doesn't go through
39
Driffraction
Spreads out due to new material
40
When a wave passes though a different medium, what changes?
Speed
41
What two properties are responsible for creating different colors?
Wavelength and frequency
42
What color has the least amount of energy? The most?
Red. Purple.
43
What color reflects all colors?
White
44
A prism is an example of ________
Refraction
45
Atoms are the building blocks of _____________
Matter.
46
Atoms are the smallest unit of an _____________
Element.
47
Negatively charges particles
Electrons
48
What is in the nucles
Protons and neutrons
49
Positively charged particles
Protons and neutrons
50
What particles orbit around the nucleus?
Electrons
51
What determines an element's atomic number?
Number of protons.
52
Atoms combine to form _______
Molecules
53
Metals are good conductors of
Heat and electricity
54
Non-metals are
Brittle and poor conducotrs
55
Metalloids
Properties of of both metals and non-metals
56
The periodic table organizes elements based on their
properties
57
Atomic Number
The amount of protons in an element
58
Alkali metals are in
Group 1
59
Alkaline Earth metals are in
Group 2
60
Halogens are found in
Group 17
61
Noble gasses are found in
Group 18
62
Transition metals are located in the ____________ of the periodic table
Middle
63
Noble gasses are
Nonreactive and rarely form compounds
64
Highly reactive metlas
Alkali metals
65
Atomic mass =
Protons + nuetrons
66
Periodic table is organized by
Atomic number
67
How many periods are in the periodic table?
7
68
Periods
Row
69
Atoms along the staircase are called
Metalloids
70
Non-metals are found
to the right of the staircase
71
Ductile
Metals
72
Groups
Collumns
73
How many groups are there
18
74
________________ change occurs when substance combine or break in order to form new substances.
Chemical
75
Change in color release of heat or light, formation of gas
Chemical change
76
______________ change involves the appearance or state of matter
Physical
77
Formation of gas
Chemical change
78
Burning wood
Chemical change
79
Rusting of iron
Chemical change
80
Cooking an egg
Chemical change
81
Baking a cake
Chemical change
82
Souring milk
Chemical change
83
Boiling water
Physical Change
84
Digestion
Chemical change
85
Rotting
Chemical change
86
Burning wood to produce ashes
Chemical change
87
Burning of a piece of paper
Chemical change
88
Fireworks
Chemical change
89
What body systems work together for movement and support
Muscular and Skeletal
90
Main organ of the nervous system
The brain
91
Gathers oxygen from it's surroundings and and gets rid of carbon dioxide from the body
The respiratory system
92
Breaks down food food into nutrients that can be used by the body
The digestive system.
93
Level of organization (Smallest to largest)
Cells, tissues, organs, organ systems
94
Moves blood through the body
The circulatory system
95
Sends signals for both the inside and outside of the body
The nervous system
96
Makes chemical messages that regulates conditions inside the body
The endocrine system
97
Removes waste from blood
The excretory system
98
Protective covering of the body
The integumentry system
99
Collects fluid that leaks from the blood and returns it to the blood
The lymphatic system
100
What do ribosomes produce?
Produces proteins
101
What is the function of the Golgi Body?
Revives proteins and distributes them out to the rest of the cell
102
What do chloroplasts do?
Captures energy from the sun and uses it to produce food for the cell
103
What is the function of lysosomes?
Breaks down large food particles into smaller ones
104
What is cytoplasm?
The region between the cell membrane and the nucleus ## Footnote The “blood” of the cell
105
What is the function of a vacuole?
The storage area of the cell
106
What does the nucleus do?
Directs all of the cells activity
107
What is chromatin?
Strands of genetic material floating in the nucleus (Made of DNA)
108
What is the function of mitochondria?
Produces energy ## Footnote Powerhouse of the cell
109
What does the endoplasmic reticulum (ER) do?
Carries proteins and other materials from one part of the cell to another
110
What is the cell membrane?
Forms the boundary in animal cells between the cell and its environment
111
What is the cell wall?
The rigid layer of non-living material that surrounds plant cells
112
What are the components of a plant cell?
Cell wall and cell membrane
113
What is an animal cell composed of?
Cell membrane
114
What is the order from simple to complex?
Organelle, cell, tissue, organ, organism
115
What organelles can be seen with a light microscope?
Nucleus, cytoplasm, cell membrane
116
What are organelles?
Tiny cell structures that carry out specific functions within the cell
117
What organelle is only found in animal cells?
Centrioles
118
Homogeneous
Uniform composition throughout, meaning its components are evenly distributed
119
Heterogeneous
Non-uniform composition, where different components are visible and can be separated.
120
Similar bone structures in different animals suggest they share a common
Ancestor

Audrey Final Reveiw (3 decks)

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