A group of scientists discovered that certain stretches of the river were polluted with toxic chemicals. Which factory(ies) is/are most likely responsible for the water pollution?
Your answer=B,
Correct answer= B,
- In the Earth's water cycle, when water vapour condenses, it _______________.
Your answer=C,
Correct answer= C,
- Which 1 of the following is not a matter?
Your answer=C,
Correct answer= C,
- Kelly observed that bubbles were released when she squeezed a sponge in water.
Which 1 of the following statements correctly explains why it happened?
Your answer=B,
Correct answer= B,
- Water will ______________ at the temperature 0° C.
A: melt
B: freeze
C: evaporate
D: condense
Your answer=A,
Correct answer= D,
- The air we breathe out contains more ____________ than the air we breathe in.
A: Oxygen
B: Carbon dioxide
C: Nitrogen
Your answer=B,
Correct answer= B,
- Which 1 of the following diagrams correctly shows the exchange of gases between the leaf of a plant and the surrounding air on a dark night?
Your answer=C,
Correct answer= C,
- Living things cannot survive without water.
Why is water important to living things?
A: Water is home to many living things.
B: Water is needed by living things to carry out life processes.
C: Water is needed by green plants to make food.
Your answer=D,
Correct answer= D,
- The table below shows the number of seedlings planted in a plot of land over a period of 2 weeks.
Days
| Number of seedlings
|
1
| 80
|
6
| 63
|
10
| 41
|
14
| 28
|
What could have caused the changes in the number of seedlings over the 2 weeks?
A: A drop in the supply of water to these seedlings.
B: A decrease in the number of animals feeding on the seedlings.
C: Regular rainfall resulting in the plants getting enough water.
D: Lack of nutrients in the soil.
Your answer=B,
Correct answer= B,
- 4 glass containers, A, B, C and D, were each filled with 200cm3 of water as shown below.
In which container will the water evaporate the fastest?
Your answer=B,
Correct answer= B,