Physics
What should you do with distilled water to make it a good conductor?
Add some table salt
It composed of subunits, it is smallest in it’s level, It is cellular component.
Ribosome
What type of chemical reaction is it?
CaCO3 + 2HCl = CaCl2 + H2O + CO2
Double Displacement Reaction
THE ONLY PLANET IN THE SOLAR SYSTEM, THAT ROTATES IN CLOCKWISE DIRECTION?
VENUS
Why are windows often bilayer?
Because air is poor conductor, and it prevents heat exchange
Science which studies fishes?
Histology
The layer of this gas occurs at stratosphere and protects Earth’s surface from ultraviolet harmful lights. What is the name and formula of this gas?
Ozone O3
THE MOST ABUNDANT ELEMENT IN THE UNIVERSE
HYDROGEN
Why are some elements from periodic table radioactive?
Because their nucleuses consist of many nucleons, and nucleus is unstable
A-Black fur, a-White fur, B-Red eyed, b-Green eyed are traits of mice. Diheterozygotes crossed.
What is probability of Black furred, Green eyed offspring?
3/16
What is a dry ice?
Carbon dioxide CO2
FAMOUS FOR HIS WORK ON BLACK HOLES
STEPHEN HAWKING
With what acceleration must fly a spaceship up to the weight of the astronauts in the spaceship was 4 times more than usual?
a = 3g
Find the animal. It belongs to pouched mammals, wounded or frightened it falls, pretending to be dead. Their body length 7-50 cm.
Predation strategy: cats by creeping, dogs by chase
Cu + Sn (sometimes + Zn)
Bronze
WHAT TWO BODY PARTS CONTINUE TO GROW THROUGH YOUR ENTIRE LIFE?
NOSE AND EARS
In a container a piece of ice is floating in water, and heater is submerged in the container. If masses of water and ice are equal, for how many degrees temperature of water increases at moment when all ice become water?
Temperature doesn’t change
Cats often clean itself by licking with tongue. However dogs don’t. Both of them Carnivores. What is the reason of this difference?
Opossum
All Allotropes of carbon
Diamond, Graphite, Fullerenes and Coal
WHY DO FOOTPRINTS ON THE MOON STAY FOREVER?
THERE IS NO WIND