1
"Landslides are considered as a natural phenomena."
Do you agree with this statement? Explain.
No. Landslides are often caused by deforestation which is caused by man.
Name 3 fields of science.
Astronomy / Biology / Physics / Chemistry
Name 3 jobs that falls under the physics field.
Physicist / Teacher / Scientist / Engineer
DOUBLE
State one importance of the field of astronomy.
The development of satellite / provides communication tool for mankind.
State one importance of the field of physics.
Construction of tall buildings and highway / improve our transportation system
List down two scientific attitudes.
Any two from:
1. have a keen interest and curiosity
2. Be responsible for safety
3. Be systematic in carrying out the investigation
4. Be honest and accurate in recording results
5. Have a rational and analytical thinking
List down two apparatus used for measuring fixed volume of chemicals.
Any two from:
1. Measuring cylinder
2. Burrette
3. Pipette
4. Syringe
What is the function of a dropper?
For storing, collecting and transferring chemicals.
Bunsen burner must be used along side __________________ and _______________________.
tripod stand, wire gauze
What is the function of the "air-hole" in a bunsen burner?
to allow air to enter the burner
Yellow flame in a bunsen burner is also known as _____________________.
Luminous flame
I’m clear as water, yet fire’s best friend—
I fuel the flames but don't pretend.
Born of sugar, grain, or yeast,
In labs and drinks, I’m not the least.
What am I?
Alcohol
EXTRA 50%
Define LENGTH.
What are used to measure length? (Give at least 3)
Length is the distance between two points.
It is measured using : measuring tape, micrometer screw gauge, vernier calipers, internal and external calipers, opisometer
A thread is 0.00045 meters long. Convert this to micrometers (µm).
450 micrometers
Describe what does the acronym P.A.S.S stands for when using a fire extinguisher.
P-Pull : Pull the pin
A- Aim: Aim at the base of the fire
S-Squeeze : Squeeze the lever to discharge the agent
S-Sweep : Sweep the spray from left to right until flames are totally extinguished.
What is "sensitivity"? Give an example.
Sensitivity is the ability to respond to stimuli.
Example: hand withdraws after touching a hot pot.
I’m a heavy rock that glows at night,
Used in bombs and power with might.
I come from deep beneath the land—
Handle with care, not with your hand!
Or else, cancer awaits.
What am I?"
Uranium / Plutonium
EXTRA 20%
I produce a lot of soot.
I am not as hot and is not so suitable for heating.
Who am I?
Luminous Flame (Yellow flame)
State the functions of:
1. mitochondrion
2. vacuole
3. lysosome
1. to produce energy
2. contains dissolved glucose and mineral salts
3. contains enzymes used to digest food
State the difference between the reproduction method of Amoeba sp. and yeast.
Amoeba sp. reproduce using binary fission, while yeast reproduce using budding.
RISK IT ALL
Outline the steps of a scientific investigation.
1. Identify problems
2. Making hypothesis
3. Planning for investigation
4. Carrying out the investigation
5. Collecting data
6. Analyse and interpret data
7. Make conclusion
DOUBLE THE TROUBLE
State and describe the 4 shapes of bacteria.
1. coccus - spherical or round shape
2. bacillus - rod-shaped
3. spirillium - spiral or twisted shaped
4. vibrio - comma-shaped
What is the difference between materials and apparatus ?
Materials are substances that are changed or used up in the experiment, while apparatus are substances that are not changed and used up in the experiment.
What is cell specialisation? Use an example to describe what cell specialisation is.
Cell specialisation is a process in which a plant cell or stem cell changes shape and structures to carry out specific function in the body.
Example: Root hair cell has long projection to allow better water absorption
What is matter?
Give examples of what is and what is not
Matter is anything that has mass and occupies space.
Example :
1) is : table / building
2) is not : emotions / light