WorksheetsScience Knowledge
Total questions: 32
Worksheet time: 17mins
A life scientist who observes the relationships between plants, animals, weather and soil on a mountaintop is studying a(n)
community
ecosystem
population
organism
Which of the following statements best describes the composition of air?
air is only made up of nitrogen
air is only made up of oxygen
air is only made up of carbon dioxide
air is made up of a mixture of different gasses
What causes the seasons?
Earth's tilt of its rotational axis
The distance between the Earth and the Sun.
Antibiotics kill viruses as well as bacteria.
True
False
Lasers work by focusing sound waves.
True
False
Electrons are smaller than atoms.
True
False
All radioactivity is man-made.
True
False
Which of the following is correct?
The Sun goes around the Earth
The Earth goes around the Sun
The continents move and will continue to move.
True
False
The center of the Earth is hotter than its surface.
True
False
Humans are about ______% water.
85
32
58
45
29
What is the biggest planet in our solar system?
Venus
The Earth
Jupiter
Mars
What is the chemical symbol for the element oxygen?
O
Ox
O2
Os
DNA is the shortened form of the term ‘Deoxyribonucleic acid’?
True
Flase
What famous scientist was awarded the 1921 Nobel Prize in Physics for his work on theoretical physics?
Isaac Newton
Stephen Hawking
Pierre Currie
Albert Einstein
The smallest particle of an element that can exist is called
Nucleus
Atom
Cell
Molecule
The common cold is caused by a bacterium
True
False
What is the process that results in the phase transition of a substance from a solid to a liquid called?
Melting
Solidification
Condensation
Evaporation
Whant kind of mixture is the sea water?
Heterogenous mixture
Homogenous mixture
Which metal is NOT magnetic?
Iron
Gold
Cobalt
Nickel
What is the name we give to an elongated worm-like larva of a butterfly or moth?
Eggs
Caterpillar
Chrysalis
Praying mantis
Gorillas are:
Herbivores
Omnivores
Carnivores
Poisonous
How many carats are there in pure gold?
18
20
24
22
'Mach One' refers to speed of:
Sound
Light
Darkness
Gravity
Planet Earth is the ______ planet from the Sun.
Second
Third
Fourth
First
Which Creature's bite can lead to Lyme disease?
Tick
Flea
Komodo dragon
Rattlesnake
What do herpetologists study?
Mammals
Fish
Reptiles and amphibians
Birds
What do Mitochondria produce?
PTA
TAP
ATP
PAT
What do the rings around Saturn mostly consist of?
Fire
Ice
Diamond
Sand
What is the largest flower in the world?
Bluebell
Rafflesia
Daisy
Daffodi
What is the name of the organ in our bodies that pumps blood?
Liver
Heart
Brain
Stomach
