GRADE 9 SCIENCE

SEMESTER END REVIEW

INTRODUCTION:

1. a) What are five different safety rules?

b) What is WHMIS?

c) Symbols and substances

Symbol / Description / Example / Symbol / Description / Example

2. Burning

Complete Burning / Incomplete burning
Starting Materials
Final Products / (2) / (4)
Air Vent
Flame
Where air meets gas
Application
Flame is called

3. Define:a) hypothesis -

b) dependent variable -

c) independent variable -

d) controlled variable -

4. For the following problem, identify the variables. Which brand of paper towels absorbs the most water?dependent -

independent -

controlled (3) –

procedure:

5. a) What is an observation? example?

b) What is a conclusion? example?

6. A softball has a mass of 360 g and a volume of 270 cm3. Find its density.

b) Would it float in water?

ATOMS AND ELEMENTS

1. What are five potential indicators of chemical change?

2. a) What is a physical change?example?

b) What is a chemical change? Example?

3. Testing of Gases

Oxygen / Hydrogen / Carbon Dioxide
Identifying Test
Physical Properties
Chemical Properties
Application
Chemical Equation

4. What is a catalyst?

5. . Periodic Table

Family Name / Group # / Property in Common / Examples

6. Elements

C3H8 / C6H12O6 / H2SO4
Elements Present
# atoms per molecule

7. What did each of the following people discover about the atom? How?

a) Thomson -

b) Rutherford -

c) Bohr -

8. Atomic Particles

Electrons / Protons / Neutrons
Size
Where found in atom
Charge

9.

Element, Symbol / Atomic Number / Mass Number / # protons / # electrons / # neutrons
Boron, B
Chlorine, Cl
19
Iodine, I / 131
Calcium ion, Ca2+

10. # protons - # protons -

# neutrons - # neutrons -

# electrons -# electrons -

11. a) What is an ion?

b) What is an isotope?

12.Draw Bohr-Rutherford diagrams of

a) Alb) Bec) F1-

ELECTRICITY

1. What is a charge?

2. a) What is a conductor? example?

b) What is an insulator?example?

c) What is a semi-conductor? example?

3. How can you make a charge? How can you discharge it?

4. What are the Laws of Electric Charges?

5. How does lightning occur?

6. What are three examples of uses for electrostatics?

7. Units and Symbols

Symbol / Unit / Unit symbol
Current
Charge
Time
Potential Difference
Energy
Power
Resistance

8.What is resistance?

9. What are the four factors that affect resistance in a wire?

10. Series and Parallel Circuits

Series / Parallel
Path for electrons
Current at different points
Potential difference at different points
Unscrewing a lightbulb
Equations for current and potential difference
Diagram: contain 3 bulbs, a switch, a battery, 4 voltmeters and an ammeter

11.

Energy Source / How it works / Advantage / Disadvantage

12 a) How are circuit breakers and fuses the same?Different?

b) What features make your electrical outlets safe?

c) How can you save energy around the home?

ECOLOGY

1. What do the following terms mean?

a) Stewardship

b) Sustainability

c) Biodiversity

d) Ecology

e) Biosphere

f) Population

2. Look at the picture beside

a) What term could be used to describe what this image is?

b) Draw a food web using the organisms found in this picture and adding 2-3 of your own.

c) What would happen to the populations in your food web if the fish were over-fished?

3.What is the equation for photosynthesis?

4.

Term / Definition / Example
Producer
Consumer
Herbivore
Omnivore
Carnivore
Detritivore

5. Biotic Interactions

Interaction / Description / Specific Examples
Competition
Predation

6. List 5 abiotic factors and 5 biotic factors that will affect populations in ecosystems.

7. What are 5 different ways that humans impact the environment?

8. Explain how the following actions can protect Canada’s ecosystems

a) Conserving Biodiversity

b) Environmental Stewardship

c) Government Regulations

ASTRONOMY

1. Name the planets in order from closest to the Sun to farthest.

2. Which planet isa) largest?b) smallest?

c) hottest?d) most like Earth?

3. Draw a diagram showing the life cycles of the different star types.

4. List three ways by which stars are classified and explain what they mean.

5. Compare comets, asteroids, meteors, satellites and dwarf planets.

Composition / Where found in solar system / Examples?
Comets
Asteroids
Meteor
Satellites
Dwarf planets

6. What are three problems astronauts will encounter in space?

7. What is the ISS? Why is it special?

8. How was the universe and our solar system formed?

9. Compare solar flare, corona, sun spot, chromosphere

10. Draw a labeled diagram of a solar eclipse.

11. Draw a labeled diagram of the life cycle of a star

12. a) Describe one major contribution Canada has made to research in space