Su Lin wants the water in the glass to dry up as quickly a possible.
She should ________________________________________.
Your answer=A,
Correct answer= B,
- Selma set up the experiment as shown below. She poured equal amounts of water into 4 different glass containers and placed them under the Sun.
She was testing the effect of the _______________ on the rate of evaporation of water.
Your answer=D,
Correct answer= C,
- 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=C,
Correct answer= B,
- Why is the water cycle important to living things?
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=A,
Correct answer= B,
- The graph below shows the number of fishes in ponds, A, B, C and D, over a period of 6 months.
Which pond contains water that is most likely not polluted?
Your answer=C,
Correct answer= A,
- Samy made some statements about the plant shown below.
Which of the following statement(s) he made was/were correct?
A: It can reproduce.
B: It can move on its own.
C: It does not need food to stay alive.
Your answer=A,
Correct answer= C,
- The table below shows 4 households, A, B, C and D trying to save water over a period of 4 months. The table shows how much water each household had been using each month.
Which family appears to have been the least effective in its attempts to save water over the 4 months?
| Amount of water used each month (m3)
|
| January
| February
| March
| April
| 17
| 17 | 18
| 19
| 15
| 14
| 15
| 14
| 18
| 19
| 15
| 14
| 16
| 16
| 15
| 15
|
|
Your answer=C,
Correct answer= A,
- The air we breathe out contains more ____________ than the air we breathe in.
A: Oxygen
B: Carbon dioxide
C: Nitrogen
Your answer=C,
Correct answer= B,
- Selina did an experiment to find out the properties of solids X, Y and Z. The result of her experiment is shown in the table below.
Solids
| X
| Y
| Z
|
Does it become flat when hit?
| No
| Yes
| No
|
Does it break into pieces when dropped?
| Yes
| No
| No
|
Is it wrapped?
| Yes
| Yes
| Yes
|
In what ways are solids X and Z similar?
A: They both do not become flat when hit.
B: They both break into pieces when dropped.
C: They both are waterproof.
Your answer=C,
Correct answer= C,