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WorksheetsCA Review #3
Total questions: 18
Worksheet time: 10mins
What is ammonia? (NH3)
Compound
Element
Mixture
What is column on the periodic table?
Group
Period
Line
Which is an example of a chemical change?
Burning of paper and log of wood.
An ice cube melting into water in your drink
A dog jumping the fence
Ice cream scoops
Which is an example of a Physical Change
Dogs
Steam from the shower condensing on a mirror.
Boiling an egg.
Cats
Law of Conservation of Mass (both sides of equations are equal)
H2O
CO2
2H2 + O2 = 2H2O
Does wind turbines produce electricty?
TRUE
FALSE
Which produce electricity?
Solar and Wind
Solar and Sun
Solar and Moon
N.C gets most of its water from?
Rivers
Lakes & aquifers
Stream
Ocean
What is an estuary?
Water falling down a runoff
Water meeting in a lake
A pond
Where a river meets an ocean
Too much algae can cause what?
Suffocating of fish
Mold
Which is the youngest fossil?
Coral
Fern
Gastropod
Trilobite
Which is the oldest fossil?
Trilobite
Ammonite
Coral
Gastropod
Most life that existed on earth is extinct?
True
False
How long is a Era?
1,000,000 millions of years
100 millions of years
1,000 millions of years
100,000 millions of years
How is a fossil formed?
Soft parts of a animal decompose and Skelton is left behind
Skelton is buried under mud and sand after years
Animals remain is buried
Which can not be a fossil?
Shark
Octopus
Crab
DInosouar
What are isotopes?
Half the parent isotopes turn into daughter isotopes
Daughter cells + Parent Cells
Both parent and daughter cells come together
Both parent and daughter cells move apart
Scientists use radioactive decay to measure (a) age
