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Science > Science pt2 > Flashcards

Science pt2 Flashcards

1
Q

What is decomposition?

A

The process of breaking down

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2
Q

What is synthesis?

A

The process of putting things together

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3
Q

What is solubility?

A

The amount of solvent that be can be dissolved into a solute

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4
Q

What is a pure substance?

A

It is an element that is made up of only one component

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5
Q

What is a heterogeneous mixture?

A

It is a mixture where you can see the different components with a naked eye

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6
Q

What is a homogeneous mixture?

A

It is a mixture where you can’t see the different components

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7
Q

Chemical changes (6)

A

Formation of precipitate/ change in colour/ formation of gas/ mold or rust/ release or absorption of heat/ emission of light

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8
Q

Energy (10)

A

Kinetic energy: thermal energy/ mechanical energy/ electrical energy/ magnetic energy
Potential energy: chemical energy/ elastic energy/ nuclear energy / gravitational energy

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9
Q

What is a multiview projection?

A

A projection showing all sides of an object (2D)

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10
Q

What is an Isometric projection?

A

3D view of an object as the point and three visible sides that are no on the plane or the paper no side facing towards you

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11
Q

What is an oblique projection?

A

View of an object that has only 1 face in the paper plane (facing you) while the other sides are out of the paper

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12
Q

What are the different types of fossils?

A
  • Petrified
  • Cast/Mould
  • Body
  • Trace
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13
Q

Where are fossils found?

A

Found in Sedimentary rocks

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14
Q

How are fossils and stratigraphic layers connected?

A

Both principals apply to fossils as well. Fossils found in the same layer are from the same time period. Older fossils are in the deeper layers .

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15
Q

What is relative dating?

A

Method used to place fossils in order without finding their exact age

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16
Q

What is absolute dating?

A

Method used to find the age of fossils in years.

17
Q

What is a stratigraphic layers

A

It is a layer of sedimentary rocks that formed in the same time period.

18
Q

What is the law or superposition?

A

Older layers at the bottom and younger layers at the top.

19
Q

What is the law of original continuity?

A

All sedimentary rocks contained in a single stratigraphic layer formed in the same time period.

20
Q

How do we mechanically and chemically digests food?

A

Mechanically: We chew it and the stomach squeezes and churns the food
Chemically: acids and enzymes turn food into liquid form.

21
Q

What is role of the stomach?

A

The stomach digest mechanically and chemically

22
Q

What is the role of the small intestine?

A

The small intestine finishes chemical digestion and the absorbs nutrients into the blood.

23
Q

What is the role of the large intestine?

A
  1. Absorbs needed water from the food

2. Package undigested food into waste.

24
Q

Why do we eat?

A

1) energy
2) body sustainability & growth
3) body & tissue repair

25
Q

How many calories are in each substance?

A

1g fat -> 9cals
1g protein-> 4cal
1g carbs -> 4cals

26
Q

What nutrients gets burned first?

A

First: Sugar&carbs
Second: fat
Third: protein (degrades your muscles to create energy)

27
Q

What is the role of Auricle?

A

It is the visible part of the ear and it receives sounds and directs them to the auditory canal

28
Q

What is the role Auditory Canal?

A

A tube lined with fine hairs and glands that secrets earwax and Carrie’s the sound waves to the ear drum

29
Q

What is the role of eardrum?

A

A thin membrane that vibrates when struck by sound waves

30
Q

What is the role of the ossicles?

A

Three small bones that vibrate in response to the vibrations of the ear drum. They sometimes amplify the vibrations

31
Q

What is the role of the Eustachian tube?

A

A tube connecting the ear to the pharynx. Balances the air pressure on both sides of the ear drum

32
Q

What is the role of the cochlea?

A

Receives and transforms the vibrations coming from ossicles into a nerve impulse to be sent to the cerebrum.

33
Q

What is the role of the vestibular nerve?

A

Carries the nerve impulse from the semi-circular canals to the cerebrum to help with the balance.

34
Q

What is the role of the auditory nerve?

A

Carries the nerve impulse from the cochlea to the cerebrum to allow us to hear

35
Q

What are the role of muscles?

A

Stabilizes joints/maintaining posture/producing movement/moving substances in the body/stabilizing body position/producing heat

36
Q

Which type of muscles controls voluntary movements?

A

Skeletal muscles

37
Q

Which type of muscles controls involuntary movements?

A

Smooth and cardiac

38
Q

Where are the muscles located?

A

Smooth muscles -> inside organs
Cardiac muscles -> heart
Skeletal muscles -> muscles

Science (14 decks)

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