PIMSO 2023 - Science - Primary 1 - National Round

Question 1

1. Herbivore
2. Omnivore
3. Carnivore
4. Insectivore
5. Detritivore

Question 2

Which kind of locomotion is associated with the following animal body part?

1. Walking
2. Jumping
3. Swimming
4. Gliding
5. Flying

Question 3

1. Soil
2. Light
3. Water
4. Fertilizer
5. All of the above

Question 4

Question 5

1. The skin provides support for the body.
2. The skin helps regulate body temperature.
3. The skin acts as a physical barrier.
4. The skin absorbs harmful sunlight radiation.
5. The skin regulates body moisture.

Question 6

1. Amoeba
2. Bacteria
3. Viruses
4. Yeast
5. Molds

Question 7

1. volume
2. mass
3. weight
4. density
5. temperature

Question 8

Balloons are usually made up of rubber because rubber is elastic. It can expand when air is blown to the balloon. What phase of matter is the rubber balloon?

1. solid
2. liquid
3. gas
4. plasma
5. none of the above

Question 9

Some orange juice is in a glass:

Which of the following is a quantitative description of a property of the juice?

1. The juice is cold
2. The juice is yellow
3. The juice is at 0 °C
4. The juice is in the liquid phase
5. None of the above

Question 10

Question 11

You have to be careful when you hold a piece of egg because it can easily break.

This illustrates what property of egg shells?

1. egg shells are biodegradable
2. egg shells are yellow
3. egg shells are light
4. egg shells are brittle
5. egg shells are small

Question 12

Cold butter, which is in the solid phase, turns to liquid when you spread it on a hot piece of bread.

This illustrates what kind of phase change?

1. evaporation
2. boiling
3. freezing
4. condensation
5. melting

Question 13

What kind of energy is stored inside batteries?



Original choices:
A. chemical energy
B. mechanical energy
C. potential energy
D. sound energy
E. heat

Editorial review: explain whether the wording supports one unique answer and state any necessary conditions.

Question 14

A ship leaves Manila bay at 6:00. Shown below is the distance travelled by the ship over time.

At what time did the ship reach 50 km?



Editorial note: Interpret “reach” as first reaching the stated distance.

1. 7:00
2. 8:00
3. 9:00
4. 10:00
5. 11:00

Question 15

Because of climate change, many cities are pushing for alternative modes of transportation. Instead of busses and cars which contribute to greenhouse gasses, many choose to go to work or school on bicycles. For this, urban areas should have bicycle lanes for the safety of bicycle users.

A bicycle contains what kind of simple machine?





Original choices:
A. inclined plane
B. pulley
C. wheel and axel
D. lever
E. wedge

Editorial review: explain whether the wording supports one unique answer and state any necessary conditions.

Question 16

The Banaue Rice Terraces is a famous Philippine landmark. Built over a thousand years ago, the terraces allowed to grow rice even on mountains. On which part of the rice terraces would you have the highest potential energy?

1. A
2. B
3. C
4. D
5. E

Question 17

1. potential energy
2. kinetic energy
3. mechanical energy
4. heat
5. light

Question 18

1. gravity
2. friction
3. ground force
4. normal force
5. the earth

Question 19

1. Spring
2. Summer
3. Fall
4. Winter
5. None of the above

Question 20

1. East
2. West
3. North
4. South
5. None of the above