Ali heated some tap water in a beaker. He allowed it to boil for 5 minutes and then left it in the beaker to cool to room temperature. He recorded the temperature at 5-minute intervals.
Which 1 of the following graphs would correctly represent his data?
Your answer=D,
Correct answer= D,
- 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=A,
Correct answer= A,
- A beaker containing water at 10° C was left on a table at room temperature. After 5 minutes, water droplets were observed on the outer surface of the beaker.
What inferences can be made based on the experiment above?
A: The room temperature is higher than 10° C.
B: Condensation has taken place.
C: The water droplets come from the water in the beaker.
Your answer=D,
Correct answer= A,
- Animal B lives in water. It does not lay eggs. Its young feed on the mother's milk. Animal B belongs to the group of ______________.
Your answer=D,
Correct answer= D,
- What was the room temperature?
Your answer=C,
Correct answer= C,
- 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,
- 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=A,
Correct answer= C,
- 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=A,
Correct answer= C,
- When the weather is very cold, 'white clouds' seem to be coming out of our mouths when we speak and breathe out.
This is because of the change in the states of water from _____________________.
Your answer=C,
Correct answer= C,
- A measuring cylinder was filled with some water. Then 2 identical marbles were added to it.
What is the volume of each marble?
Your answer=A,
Correct answer= A,