Printable Worksheet: Matter in Our Surroundings | Science Class 9 PDF Download

 Page 1


Worksheet: Matter in Our Surroundings
Class 9 - Science
Name: Date:
Section A: Multiple Choice Questions (1 mark each)
1. Matter is anything that .
a) has mass only
b) occupies space only
c) occupies space and has mass
d) emits light
2. Which state of matter has the highest kinetic energy?
a) Solid
b) Liquid
c) Gas
d) Plasma
3. Sublimation is the process by which a solid turns directly into a .
a) liquid
b) gas
c) plasma
d) solid
4. Evaporation differs from boiling because evaporation .
a) occurs at boiling point only
b) occurs at surface and any temperature
c) takes place in bulk
d) releases heat
Section B: Short Answer Questions (2 marks each)
5. Define ”melting point” and ”boiling point”.
6. List three characteristics of particles of matter.
7. Explain why gases are easily compressible, but solids are not.
1
Page 2


Worksheet: Matter in Our Surroundings
Class 9 - Science
Name: Date:
Section A: Multiple Choice Questions (1 mark each)
1. Matter is anything that .
a) has mass only
b) occupies space only
c) occupies space and has mass
d) emits light
2. Which state of matter has the highest kinetic energy?
a) Solid
b) Liquid
c) Gas
d) Plasma
3. Sublimation is the process by which a solid turns directly into a .
a) liquid
b) gas
c) plasma
d) solid
4. Evaporation differs from boiling because evaporation .
a) occurs at boiling point only
b) occurs at surface and any temperature
c) takes place in bulk
d) releases heat
Section B: Short Answer Questions (2 marks each)
5. Define ”melting point” and ”boiling point”.
6. List three characteristics of particles of matter.
7. Explain why gases are easily compressible, but solids are not.
1
Section C: Long Answer / Diagram (4 marks each)
8. Draw and label a diagram showing the arrangement of particles in a solid, liquid,
and gas.
9. Describe the process of evaporation and mention two factors that affect its rate.
Section D: Application / Numericals (3 marks each)
10. A student heats ice steadily from -10°C to 110°C. Sketch the temperature–time
curve, labeling plateaus and stages. Indicate melting and boiling points.
11. Explainwhysteamcausesmoresevereburnsthanboilingwater, despitebothbeing
at 100°C.
Section E: Fill in the Blanks (1 mark each)
12. The process of gas turning into liquid is called .
13. The kinetic energy of particles is in liquids than in gases.
14. During melting, heat energy is used to break between particles.
Section F: Activity (Optional)
Create a crossword using the following words: SOLID, LIQUID, GAS, EVAPORA-
TION, SUBLIMATION.
2