Science Flashcards

1
Q

Pivot point/ fulcrum:

A

The center where a lever rests.

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2
Q

Lever:

A

Beam

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3
Q

Equilibrium:

A

Where balance is leveled.

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4
Q

Instead of smelling a chemical directly, you:

A

Waft

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5
Q

Keep a test tube pointed:

A

Away from you

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6
Q

Acceleration:

A

The rate of change in speed/velocity.

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7
Q

SI system:

A

System International

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8
Q

SI system is based on the number:

A

10

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9
Q

Basic unit of length:

A

Meter(m)

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10
Q

How to find speed:

A

Distance divided by time

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11
Q

Volume:

A

Amount of space taken up by an object.

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12
Q

SI unit for volume:

A

Liter(L)

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13
Q

Meniscus:

A

A curve on the bottom of a liquid.

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14
Q

Unit:

A

A quantity

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15
Q

Luster:

A

How shiny an object is.

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16
Q

Density:

A

How tightly packed an object is.

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17
Q

Function of microscope:

A

Allows you to look at tiny objects closer.

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18
Q

Where to hold a microscope:

A

Arm and base

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19
Q

How to find total magnification power:

A

Eyepiece x objective

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20
Q

High power magnification is:

A

40x

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21
Q

Low power magnification is:

A

10x

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22
Q

Scanning objective magnification is:

A

4x

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23
Q

Founder of microscopes is:

A

Antoni Van Leeuwenhoek

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24
Q

How many steps are there in the scientific method:

A

7

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25
The steps of the scientific method are:
1. State the problem 2. Gather data 3. Form a hypothesis 4. Perform an experiment 5. Collect data 6. Analyze data 7. Form a conclusion
26
Control:
Stays the same
27
Variable:
Changes
28
Hypothesis:
Educated guess
29
How many features of living things are there:
9
30
Biotic:
Living
31
Abiotic:
Never living
32
Dead:
Once alive
33
Niche:
Role
34
Autotroph:
Producer
35
Heterotroph:
Consumer
36
Who found cells:
Robert Hooke
37
Chromatin contains:
DNA
38
The full form of DNA is:
Deoxyribonucleic acid
39
Matter:
Anything with mass or volume.
40
SI unit for mass:
Kilograms
41
Chemistry is:
Study of matter
42
Heterogeneous mixture:
Unevenly mixed
43
Homogeneous mixture:
Evenly mixed
44
Solute:
Gets dissolved
45
Solvent:
Does the dissolving
46
Who invented the Periodic Table:
Mendeleev
47
What was special about Mendeleev's Periodic Table?
He left blanks for future elements.
48
*BONUS* How many elements are there on the Periodic Table?
118
49
Period:
Rows
50
Group/family:
Columns
51
Proton:
Positively charged
52
Neutron:
No charge
53
Electron:
Negatively charged
54
Atomic mass(amu) is found by:
Adding protons and neutrons
55
Valence electron:
Electrons in the outer shell of an atom.
56
Noble gasses are in(what group):
Group 18
57
Longitudinal wave goes:
Back and forth
58
Transverse wave goes:
Up and down
59
Refraction:
Bending of a wave
60
Trough is at the ___________ of a wave:
Bottom
61
Crest is at the ___________ of a wave:
Top
62
Amplitude is ______________________
Up and down
63
Wavelength is ____________________
Side to side
64
The two types of signals are:
Digital and analog
65
Opposite sides(attract or repel):
Attract
66
Same sides(attract or repel):
Repel
67
The three materials that attract are:
Cobalt, iron, nickel
68
True or false; Earth is a giant magnet:
True
69
Is light on or off in a closed circuit:
On
70
Is light on or off in an open circuit:
Off
71
The nine features of living things are:
1. Maintain homeostasis 2. Have one or more cells 3. Grow and develop 4. Reproduce 5. Respond to stimuli 6. Use energy 7. Have a life span 8. Moves 9. Adapts