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Natural Science Gr 6 > Term 1 Gr 6 > Flashcards

Term 1 Gr 6 Flashcards

(103 cards)

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0
Q

Describe photosynthesis

A

The process in which a plant makes its own food with carbon dioxide from the air, water from soil and energy from the sun

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1
Q

What is it called when a plant makes its own food

A

Photosynthesis

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2
Q

What is made by photosynthesis

A

Glucose sugar

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3
Q

Where on the plant does photosynthesis take place and why

A

Leaves because they are thin & flat so can absorb the sunlight

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4
Q

When plants make too much glucose sugar what do they change it into

A

Starch

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5
Q

Why do plants store the starch

A

For when there is not much sunlight to produce, they take from storage

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6
Q

Name 6 places on a plant where it can store starch

A 
Leaves
Stem
Roots
Flowers
Fruit
Seeds
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7
Q

Name two reasons why a delicious monster has holes in the leaves

A

So it can withstand strong winds and the sun can pass through to the other leaves

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8
Q

Why do plants need fertilizer

A

They can’t produce all the nutrients they need

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9
Q

What are the 3 most important nutrients a plant needs

A

Nitrogen
Potassium
Phosphorus

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10
Q

Where do the plants get the fertilized nutrients from

A

The soil

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11
Q

How do the plants get these nutrients from the soil

A

Water disolves them and the plant absorbs it through its roots

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12
Q

What do plants use from the air during photosynthesis

A

Carbon dioxide

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13
Q

What do plants give off into the air as waste

A

Oxygen

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14
Q

Who benefits from the oxygen that plants release

A

Animals and people

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15
Q

What do people release into the air a waste

A

Carbon dioxide

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16
Q

What benefits by the carbon dioxide that humans release into the air

A

Plants

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17
Q

Do plants need to breath, if so when do they breath

A

Yes at night

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18
Q

What do plants release into the air at NIGHT

A

Oxen

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19
Q

What do plants release into the air during the day

A

Oxygen

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20
Q

Why do plants release Carbon dioxide in the day and not at night

A

Because they are using it for photosynthesis during the day

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21
Q

What are the 4 main food groups

A

Protein
Carbohydrates
Fats & oils
Vitamins & minerals

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22
Q

What is the function of protein in the body

A

Growth & repair

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23
Q

What is the function is carbohydrates in the body

A

Energy

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24
What is the function of fats in the body
Store energy
25
What is the function of vitamins & minerals in the body
Build health immune system
26
Give 3 examples of sugary carbohydrates
Sugar Honey Dried fruit
27
Give 3 examples of starchy carbohydrates
Rice Breat Potatoes
28
Give 4 examples of protein
Meat Fish Egg Cheese
29
Give 3 examples of fats & oils
Butter Margarine Nuts
30
Give 2 examples of food rich in vitamins
Fruit | Vegetable
31
State 2 foods rich in minerals
Milk | Yoghurt
32
If food is in a tin, box or sealed pack what is it known as
Processed food
33
Most processed food has added sodium - also known as
Salt
34
Most processed foods contain salt and what
Sugar
35
What are the three additives in processed food
Preservatives Flavourants Coloulorants
36
What does a flavourant do to food
Adds flavour
37
What does a preservative do to food
Makes it last longer
38
What do colouring a do to food
Makes it look good to eat
39
What is a diet
A group of foods a person chooses to eat every day
40
What is a balanced diet
A diet that has the right amount of nutrients
41
What else is important in a balanced diet
Water & fibre
42
Where does fibre help with in our body
Helps with the digestive system
43
What percentage of water is in an apple
80%
44
Junk food is high in 3 things what are they
High in sugar High in fat High in salt
45
Does junk food have protein, if so how much
Yes, Very little
46
Does junk food have additives, if so how much
Yes, lots
47
State 3 things that makes food fast food
It's Fried Quickly prepared Highly processed
48
List three food items from the red traffic light diet
Sweets Chips Fizzy juice Hamburgers
49
List 3 foods from the Orange section of the traffic light diet
``` Butter Eggs Cheese Bacon Red meat ```
50
List 3 foods from the green of the traffic light diet
Fish Milk / yoghurt Wholewheat bread Fresh fruit / veg
51
What are the worms called that the Limpopo or Botswana people eat
Mopane worms
52
What goodness do the people get from the mopane worms
Protein Minerals Fat
53
Where do the mopane worms get the nutrients from
The mopane tree
54
Are some diseases related to a bad diet
Yes
55
What is tooth decay
When a persons teeth start rotting
56
What makes acid in a persons mouth
Bacteria
57
What eats away a teeth that makes holes or cavities
Acids
58
What does bacteria feed on in your mouth
Sugar
59
What disease do you get from eating too much sugar foods and fizzy drinks
Diabetes
60
What is a condition of diabetes
High blood sugar
61
What do people with diabetes have to do to keep sugar levels low
Inject themselves with insulin
62
What is obesity
A person that is unhealthily overweight
63
Obesity can lead to three other diseases, what are they
Diabetes Heart disease Hypertension
64
What is hypertension caused by
Eating too much salt
65
What is heart disease caused by
Eating too much fat
66
What are you lacking in your diet if you get kwashiorkor
Protein
67
What do the people in west Africa believe kwashiorkor means
A sickness that a child gets when another child is born
68
What makes the child's stomach swell when they have kwashiorkor
Build up of fluid in the blood
69
What two protein rich foods are recommended for children to eat
Peanut butter | Milk powder
70
Give 3 reasons why food is processed
Make it ready to eat Make it last longer Improve its nutrient value
71
What is food processing
Turning raw plant and animal materials into food products
72
What are fortified foods
Food that have had vitamins and minerals added to improve their nutritional value
73
What is the most nutritional part of the kernel when making cornflakes
Germ
74
Why is the germ removed
It's removed because it's full of oils that can spoil & develop a horrible taste
75
What is the hard starch part of the kernel left behind called
Grit
76
What is cooked with the grit to make it soft & sticky
Malt syrup
77
What is the process the Xhosa people followed to process their own Mielies
``` Dry by hanging from ceiling Remove kernel Placed in mortar Sprinkled with water Pounded / stamped ```
78
Once peanut shells are removed what happens
They are roasted
79
Why was peanut butter invented
As a protein For people with no teeth and could not chew meat
80
What is done to get the peanuts roasted on all sides
The pot is shaken
81
Why are peanuts quickly cooled after roasting
so that they don't loose too much oil
82
What is blanching in the process of making peanut butter
When the skin is removed on a rubber belt
83
What is removed when the peanuts are split open
Their hearts
84
What are the peanuts hearts used for
Bird feed
85
What are the peanut skins used for
Pig food
86
What is found on maize and peanuts that can cause cancer
A dangerous fungus
87
What condition can maize and peanuts not have the dangerous fungus grow on them
Dry conditions
88
What are a further 3 methods to process food
Preparing Combining Cooking
89
List 4 ways of preserving foods
Pickling Salting Freezing Drying
90
What is preserving foods
Treating it to last longer
91
What is done in the process of heating
Heated to kill bacteria
92
What is done when freezing, pickling, drying or salting food
Stop bacteria from growing on food
93
What happens when pickling food
Salt water or vinegar is added
94
What is salt water also know as
Brine
95
What is the process of heating milk called
Paste rising
96
Why is milk pasteurized
To make it last longer
97
What is used to ferment foods in processes
Yeast or bacteria
98
What do we call the method of processing using a good bacteria
Fermenting
99
What does fermenting food or drinks improve in the it
Improves its nutrient value
100
List 4 examples of fermented beverages
Amani Ginger beer Sorghum beer Yoghurt
101
Where was amasi made in the traditional times
In a calabash, hide bag or clay pot
102
What happens to the milk during the process making amasi
Good bacteria is produced and fights harmful bacteria from infecting it

Natural Science Gr 6 (1 decks)

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