|
Answer the following
questions.
(Use lower case only.) |
| |
| |
1) |
Pick the correct gas from the list below to
answer questions a - h. |
|
| |
|
Oxygen Nitrogen Argon Carbon
Dioxide |
| |
| |
a) |
Which gas in the air is needed for wood to
burn? |
|
| |
|
 |
| |
| |
b) |
When wood burns, water vapour is made - and
what else? |
|
| |
|
|
| |
| |
c) |
Complete the word equation for burning using
b) and a). |
|
| |
|
wood + 
water + |
| |
| |
d) |
Which gas in the air do we need to breathe in
to stay alive? |
|
| |
|
|
| |
| |
e) |
Which gas produced by respiration do we
breathe out? |
|
| |
|
|
| |
| |
f) |
Complete the word equation for respiration
using d) and e). |
|
| |
|
glucose +
water + |
| |
| |
g) |
Which gas is needed, along with water, for
photosynthesis? |
|
| |
|
|
| |
| |
h) |
Which gas is produced, along with glucose, by
photosynthesis? |
|
| |
|
|
| |
| |
2) |
Fill in the gaps in the following paragraph
on the Carbon Cycle with the correct words? |
|
| |
|
Plants make glucose from
and water. This process is called .
It
the amount of carbon dioxide in the air, and produces .
Animals, plants and bacteria produce energy from oxygen by the process of .
This process releases
into the air. When wood and other fuels are ,
oxygen from the air is used up, and water vapour and
are produced. Carbon dioxide is also produced by
and fungi, when they break down materials in
animals and plants, or in animal and plant waste. This process is called
decay or . |
|
| |
| |
3) |
Which of the following respire? Answer yes or
no |
|
| |
|
A bacterium |
| |
|
A daffodil |
| |
|
A table |
| |
|
A piece of coal |
| |
|
A river |
| |
|
|