Biology
What is the smallest unit of the living things?
Cell
How many atoms in water molecule?
Name the process when solid turns to liquid
Melting
Biggest planet in our Solar system?
Jupiter
How do you call a scientist that studies the Climate?
Climatologist
What do arrow in the food chain represents?
Idea of Flow of energy
Name the substance that have neutral PH
Water or human blood
Why balance will show your weight different on Moon compared to Earth
Difference in gravity
How many low and high tides there is per day?
two high and two low tides
Where does gas exchange happens in human body?
Alveoli/Air sac
What term do we use for a group of organisms that belong to the same species?
Population
Name three things required for combustion
fuel, oxygen, and heat
Marcus rides his bicycle at a speed of 4m/s for 60s. How far doeas he go in this time?
240m
What is the name and shape of our galaxy?
Name: Milky way
Shape: Spiral
Calculate the weight of an object that has 25kg on Earth
245.25N ≈ 250N
List the organs of the Excretory system
Kidney, Ureter, Urinary bladder, Urethra
When citric acid reacts with sodium hydrogencarbonate to form carbon dioxide gas temperature of the surrounding decreases. What chemical reaction is that?
Endothermic
The law of conservation of energy states that...
Energy cannot be created or destroyed, it can only change forms.
What is the name of the Mars sized planet that collided with Earth to form the Moon?
Theia
Human can hear sounds between what frequencies?
20 Hz to 20000 Hz
A person suffers from anemia, gets tired easily, have a pale skin colour, and gets dizzy often. What kind of meal he should consume and why?
Meal that contain Iron, to make more red blood cells
Say the word equation for this following reaction:
HNO3 + Li2CO3 -> LiNO3 + H2O + CO2
Nitric acid + Lithium Carbonate -> Lithium nitrate + Water + Carbon dioxide
What is the density of copper cube that's one side is 4cm, and have a mass of 64 grams
1 g/cm3
State three evidences that supports continental drift
Fossils, Minerals, Jigsaw puzzle appearance
Car can move, can sense the surrounding, needs fuel and can produce wastes, but why can't car be considered as a living thing?
Car can't grow and reproduce