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
Q

The steps of the scientific method are:

A
  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
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26
Q

Control:

A

Stays the same

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27
Q

Variable:

A

Changes

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28
Q

Hypothesis:

A

Educated guess

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29
Q

How many features of living things are there:

A

9

30
Q

Biotic:

A

Living

31
Q

Abiotic:

A

Never living

32
Q

Dead:

A

Once alive

33
Q

Niche:

A

Role

34
Q

Autotroph:

A

Producer

35
Q

Heterotroph:

A

Consumer

36
Q

Who found cells:

A

Robert Hooke

37
Q

Chromatin contains:

A

DNA

38
Q

The full form of DNA is:

A

Deoxyribonucleic acid

39
Q

Matter:

A

Anything with mass or volume.

40
Q

SI unit for mass:

A

Kilograms

41
Q

Chemistry is:

A

Study of matter

42
Q

Heterogeneous mixture:

A

Unevenly mixed

43
Q

Homogeneous mixture:

A

Evenly mixed

44
Q

Solute:

A

Gets dissolved

45
Q

Solvent:

A

Does the dissolving

46
Q

Who invented the Periodic Table:

A

Mendeleev

47
Q

What was special about Mendeleev’s Periodic Table?

A

He left blanks for future elements.

48
Q

BONUS How many elements are there on the Periodic Table?

A

118

49
Q

Period:

A

Rows

50
Q

Group/family:

A

Columns

51
Q

Proton:

A

Positively charged

52
Q

Neutron:

A

No charge

53
Q

Electron:

A

Negatively charged

54
Q

Atomic mass(amu) is found by:

A

Adding protons and neutrons

55
Q

Valence electron:

A

Electrons in the outer shell of an atom.

56
Q

Noble gasses are in(what group):

A

Group 18

57
Q

Longitudinal wave goes:

A

Back and forth

58
Q

Transverse wave goes:

A

Up and down

59
Q

Refraction:

A

Bending of a wave

60
Q

Trough is at the ___________ of a wave:

A

Bottom

61
Q

Crest is at the ___________ of a wave:

A

Top

62
Q

Amplitude is ______________________

A

Up and down

63
Q

Wavelength is ____________________

A

Side to side

64
Q

The two types of signals are:

A

Digital and analog

65
Q

Opposite sides(attract or repel):

A

Attract

66
Q

Same sides(attract or repel):

A

Repel

67
Q

The three materials that attract are:

A

Cobalt, iron, nickel

68
Q

True or false; Earth is a giant magnet:

A

True

69
Q

Is light on or off in a closed circuit:

A

On

70
Q

Is light on or off in an open circuit:

A

Off

71
Q

The nine features of living things are:

A
  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