Biology
Optics
Chemistry
Climate change
100
What is the organelle part of?
The organelle is part of the cell
100
Is the attitude of a pinhole camera inverted or upright?
Inverted
100
What type of reaction is the following chemical equation?:NH3-->N+H2
Decomposition
100
What can store carbon dioxide?
Plants
200
What does a cancer cell do?
A cancer cell divides uncontrollably and invades organs and tissues.
200
When light hits an object,what are the 3 things that could happen to the light?
Transmitted,reflected or absorbed
200
What is the name for KOH?
Potassium hydroxide
200
What does the atmosphere do to the heat radiation?
The atmosphere reflects the heat radiation back to earth.
300
Which number is the eyepiece part?
1
300
Which part of the eye is the black inner surface of the eye that absorbs light and sends messages to the brain?
Retina
300
What are the five evidences of a chemical reaction?
1.change of colour
2. Change of odour
3.precipitate forms
4.light or heat given off
5.bubble gas formed
300
Why is the greenhouse effect very important to life on earth?
Living things still need warmth to survive
400
What does the nucleus do in the cell?
It organizes all of the cell’s activities.
400
Is glow in the dark stickers phosphorescent or chemiluminescence?
Chemiluminescence
400
Why do we need to use acid to neutralize a base?
We need to neutralize the base with a acid so we’re able to clean and dispose the base safely and properly.
400
What is the natural greenhouse effect?
Absorption of thermal energy by the atmosphere,maintains earth at an average temperature suitable for life.
500
Which mitosis phase is where the chromosomes get separated?
Anaphase
500
What is the definition of refraction?
Bending of light as it passes from one medium to another.
500
What is the ph value of shampoo and is it a acidic, basic or neutral?(If you get ½ of the question right, you get 250 points)
ph is 7, the shampoo is a neutral
500
What are the five components of the climate system?
Cryosphere,hydrosphere,biosphere,geosphere and atmosphere