Physics
A box of mass 7 kg is pushed with a force of 56 N. What is its acceleration?
a= 8 m/s2
You can’t live without iron. Where in the body is most of the iron located?
Red blood cells
This organ is the only one in human body that can regenerate itself.
Liver
How many elements are on the periodic table?
118
This process in which water Vapor turns into liquid water
Condensation
A cyclist increases speed from 4 m/s to 16 m/s in 6 seconds with uniform acceleration
a=2m/s2
Name first 5 elements from periodic table
H, He, Li, Be, B
This process removes carbon dioxide from the atmosphere
Photosynthesis
What is the speed of light?
300 million m/s
What is the hardest known substance?
Diamond
What happens to current if resistance increases while voltage stays the same?
Current decreases (Ohm’s law).
What is an Alloy?
Mixture of metal and other elements7
This part of your body contains more bacteria than human cells
Gut
What is used to split white light into different colors?
Prism
This food never spoils
Honey
Explain all the 3 laws of Newton
1.
Add the missing state symbols to the chemical equation for the reaction.
MgCO3….+ 2HCl….® MgCl2 (aq) +H2O…+ CO2…
MgCO3(s) + 2HCl(aq) ® MgCl2 (aq) +H2O(l) + CO2(g)
Around 50 % of this organ is made of fat, making it one of the fattest in the body.
Brain
This scale measures earthquake magnitude
Richter scale
This planet rains diamonds
Neptune
A lion accelerates with initial velocity 4m/s to reach a final velocity, using an acceleration of 2m/s2 over a distance of 5m. Calculate the final velocity of the lion.
Final velocity = 6m/s
CaH2, reacts spontaneously with oxygen to produce a white solid and colorless liquid. No other products are formed. Write an equation for the reaction of CaH2, with oxygen.
CaH2 + O2 ® CaO +H2O
This mammal is the only one capable of true flight.
Bat
Diamond and graphite are made of the same element and this element is
Carbon
This elements name means “sun” in Greek
Helium