The layer of air that covers the surface of the Earth is known as ______________.
Your answer=C,
Correct answer= C,
- Mary poured some icy cold soft drink in a jar, covered it with a metal lid and placed it on a table with a thin glass top as shown below. At which of the following parts would she observe tiny water droplets after 5 minutes?
Your answer=D,
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=,
Correct answer= A,
- The metal tank below has a capacity of 1000 cm3.
It can be filled with _____________________.
Your answer=,
Correct answer= C,
- John conducted an experiment to find out if carbon dioxide is given off by the mouse during respiration.
Which 1 of the following observations would he make after 1 hour?
| Limewater in flask A
| Limewater in flask B
|
(1)
| Remained clear
| Turned chalky
|
(2)
| Turned chalky
| Remained clear
|
(3)
| Remained clear
| Remained clear
|
(4)
| Turned chalky
| Turned chalky
|
Your answer=,
Correct answer= B,
- Jim added some hot water into a beaker of ice.
Which of the following statement is correct?
A: The ice gains heat and melts faster.
B: The hot water loses heat and melts the ice.
C: The ice changes from solid state to liquid state.
Your answer=,
Correct answer= D,
- 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=,
Correct answer= D,
- 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=,
Correct answer= A,
- In the morning, Julia noticed water droplets on the outside of the cars even though it did not rain the night before.
Which 1 the following statements explains what happened?
Your answer=,
Correct answer= B,
- Some drivers along a road noticed a fire engine and gave way to it.
What senses did all these drivers use to come to this decision?
A: Sense of sight
B: Sense of touch
C: Sense of smell
D: Sense of hearing
Your answer=,
Correct answer= B,