Question 1

Which of the following is a heterogeneous mixture in nature?

Accepted Answer

sand and shells

Answer

pebbles

Answer

seawater

Answer

air

Question 2

Which of the following statement is true?

Accepted Answer

We can identify the components of a heterogeneous mixture.

Answer

Homogeneous mixture is not evenly mixed.

Answer

Homogeneous mixture has a non-uniform appearance.

Answer

The components of a heterogeneous mixture is uniform in appearance.

Question 3

What kind of mixture is formed when larger particles settle out when left undisturbed?

Accepted Answer

suspension

Answer

colloid

Answer

solution

Answer

solvent

Question 4

What separation technique can be applied to make washing clothes easier and hassle-free?

Accepted Answer

Separate the white clothes from the colored ones by handpicking to avoid staining it or mixing colors.

Answer

Separate the colored clothes from the white ones by handpicking.

Answer

Separate the colored clothes from the white ones.

Answer

Put all the laundry in the washing machine all at once to save time.

Question 5

Blood is the liquid part of the circulatory system. What is the function of the blood?

Accepted Answer

It transports oxygen to body parts.

Answer

It helps distribute the food to all parts of the body.

Answer

It controls the beating of the heart.

Answer

It transports messages throughout the body.

Question 6

Which of the following living components are found in the tropical rainforest?

Accepted Answer

There are insects and spiders and there are also snails and worms found in the rainforest.

Answer

Existence of animal diversity

Answer

Keeps things in motion.

Answer

Variety of non-living components only.

Question 7

What is the harmful effect if the ecosystem is not protected or conserved?

Accepted Answer

There will be loss of biodiversity and lead to extinction of animal species.

Answer

Existence of animal diversity.

Answer

Measures weight of different substances.

Answer

The lives of people will be endangered

Question 8

Which form of energy is best described below?

Accepted Answer

Heat energy is the result of the movement of tiny particles called atoms, molecules in solids, liquids and gases.

Answer

Keeps things in motion.

Answer

It travels in a straight path.

Answer

Light is a form of electromagnetic conduction.

Question 9

Sound energy is helpful in our daily lives. How do you describe sound energy?

Accepted Answer

It is a force that causes an object to vibrate through substances.

Answer

It is the movement of objects in the form of waves.

Answer

It travels in a straight path.

Answer

It releases light and sound energy.

Question 10

Which of the following statements best describe the changes on the Earth’s surface as a result of volcanic eruption?

Accepted Answer

Lahar flows cover a certain land area changing residential and agricultural areas into a desert-like area.

Answer

Soil pollution will occur.

Answer

It can cause formation of habitat for terrestrial animals.

Answer

Stay inside the house and shout for help.

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