Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
54 Cards in this Set
- Front
- Back
|
what is acid rain |
acid rain is rain that has more acidity than normal rain
|
|
|
what ph does acid rain have |
less than 5.6 |
|
|
what does the ph scale go from |
0-14 |
|
|
what is the strongest acid |
ph 0 |
|
|
what scale is an alkali |
above 7 |
|
|
what is the strongest alkali |
14 |
|
|
what scale does a neutral substance have |
ph 7 |
|
|
what substance is neutral |
water |
|
|
which gases cause acid rain |
carbon dioxide sulphur dioxide nitrogen oxides
|
|
|
what are the causes of these gases that cause acid rain? |
volcanoes and fuels |
|
|
what damage can acid rain do? |
erode materials like rock it can destroy crops damage to soil |
|
|
how can we prevent acid rain |
share cars filter gases from power stations |
|
|
how is carbon dioxide produced |
when coal is burnt in a power station |
|
|
how is carbon monoxide produced |
when fuel is burnt in cars |
|
|
what are the two acids produced in rain clouds |
sulphuric acid nitric acid |
|
|
what is the equation for photosynthesis |
carbon dioxide + water = glucose + oxygen ( energy) |
|
|
biological weathering |
weathering cause by plants and animals |
|
|
chemical weathering |
weathering caused by chemicals |
|
|
clay |
very fine particles of rock |
|
|
erosion |
the movement of places of rock by wind,water etc |
|
|
humus |
a mixture of rotting plant material and animal remains found in soil |
|
|
lime |
calcium oxide made by roasting limestone or chalk |
|
|
bam |
the best soil for growing plants. mixture of hummus,clay and sand |
|
|
mineral |
a chemical found in rocks. |
|
|
neutralisation |
a reaction in which an acid cancels out an alkali |
|
|
ph |
a scale which measures how acidic or alkaline a solution is |
|
|
physical weathering |
weathering caused by physical procceses such as temperature |
|
|
where do plants get most of their mass from? |
carbon dioxide in the air |
|
|
where do plants get most of their food from |
the sun |
|
|
why do plants grow the way they do |
to support their weight so every leaf gets nutrients from the sun |
|
|
why do plants grow fruit |
to attract animals so they move around and grow more trees |
|
|
why do some plants have vines |
to compete for sunlight |
|
|
what are medicinal plants used for |
medicine |
|
|
what green pigment do plants make |
chlorophyll |
|
|
what colour are trees |
red and orange |
|
|
why are they green |
because the cholorophyll over powers the red and orange. |
|
|
what do plant do at night |
respiration |
|
|
what do plants do in the day time |
photosynthesise and respire |
|
|
what do plants take in day and night |
oxygen |
|
|
what do they take out |
co2 |
|
|
what is mrs gren |
moving respiring sensitive growing reproduce excrete nutrition |
|
|
what is the formula for respiration |
glucose + oxygen makes carbon dioxide + water |
|
|
where is chlorophyll found |
inside chloroplasts inside plant cells |
|
|
how do plants absorb light energy |
using chlorrophyl |
|
|
what do they use light energy for? |
to convert carbon dioxide and water into sugar called glucose |
|
|
what is the by product of photosynthesis |
oxygen |
|
|
what do we mainly use glucose for |
respiration and storage to be later used for respiration |
|
|
what are the 3 factors that limit photosynthesis |
light intensity temprature carbon dioxide |
|
|
why are leaves broad and flat |
so they have a big surface area for absorbing light |
|
|
why do leaves have veins |
to transfer nutrients such as water to the leaf cells and take away glucose |
|
|
what are the reactants in photosythesis |
carbon dioxide and water
|
|
|
what is the name for the holes in the leaf to allow carbon dioxide throught |
stomata |
|
|
where does photosynthesis happen |
in all the green bits of a plant mainly the leaves |
|
|
where are chyroplasts found |
in cells near the top of the leaf |
