WorksheetsScience Review Grade 6
Total questions: 25
Worksheet time: 16mins
A . . . is a group of two or more atoms held together by chemical bonds
molecule
particles
compound
element
A substance made from a single type of atom is called . . .
molecule
particles
compound
element
A substance made from two or more different elements linked together is called a . . . .
molecule
particles
compound
element
Following are the examples of strong alkali, except . . . .
oven cleaner
sodium hydroxide
milk of magnesia
lemon juice
Which of the following is the metallic element?
hydrogen
iron
carbon
nitrogen
Hydrogen is the non-metallic element. What is the property of hydrogen?
Purple solid
Soft yellow solid
Colourless gasses
Soft black solid
Geologist divide the history of the Earth into four great . . . .
Eons
Eras
Periods
Centuries
An era is divided into . . . .
Eons
Periods
Years
Centuries
In which eon that oxygen builds up in the atmosphere?
Hadean eon
Archean eon
Proterozoic eon
Phanerozoic eon
Most fossils are found in layers of . . . rock.
fossil
sedimentary
radioactivity
evolution
The Cenozoic era was the age of the dinosaurs.
true
false
The Earth formed in Hadean eon.
true
false
The picture tells that it is . . . .
sunny intervals
light cloud
dark cloud
light rain
What is a depression?
A massive storm of swirling air.
Strong winds and heavy rainfall.
A condition where the weather is very hot.
A region of low pressure.
What makes the wind blow?
The differences of weather.
The differences in air pressure.
The differences of temperature.
The differences of the wind speed.
The hot wind from the desert that may bring sandstorms in early or late summer is called . . . .
Mediterranean
Desert climate
Khamsin
Climate
The normal pattern of weather in a certain place is called . . . .
Mediterranean
Desert climate
Khamsin
Climate
What has caused a hole to appear in the ozone layer?
Silicon carbide
CFCs
Sodium hydroxide
Calcium carbonate
What is ozone layer?
A thin layer of gas in the atmosphere.
A gas that neutralises an acid
A different gas in the air.
A gas that formed as rain.
Why is the ozone layer important?
To protect us from the harmful liquid gas.
To protect us from the harmful ultraviolet radiation from the sun.
To protect us from the harmful CFCs.
To protect us from the harmful carbon dioxide.
A . . . measures the temperature.
(a)
An . . . measures the wind speed.
(a)
A . . . measures the humidity.
(a)
A . . . measures the air pressure.
(a)
A . . . measures rainfall.
(a)
