WorksheetsBASIC SCIENCE
Total questions: 20
Worksheet time: 12mins
What is the best way to prevent soil erosion?
re-planting trees
cutting down trees
constructing a wall around the denuded area
allowing mining industries to operate
In what soil conservation technique might a farmer plant corn one year and soybeans the next to replenish the soil with nitrogen?
Cover Crops
Crop Rotation
No-Till Farming
Terraces
A deep cut can lead to the risk of which disease?
Tetanus
Typhoid
Flu
Malaria
When do blisters occur?
When there is a cut
When there is an animals bite
When there is a fracture
When there is a burn
What type of rock is formed when melted rock cools?
Igneous
Metamorphic
Sedimentary
Where are fossil fuels found?
in rocks on the ground
at the landfill
at the recycling centre
underneath the Earth's surface
How are fossil fuels formed?
Formed from thousands of layers of feces under extreme heat and pressure over a long period of time
Decomposing of plants and animals under extreme heat and pressure from an underground
Formed from thousands of layers of dusts under extreme heat and pressure over a long period of time
Decomposing of plants and woods under extreme heat and pressure from an underground
Which of the following is NOT an element of erosion?
Water
Wind
Glaciers
Electrical Current
The following are the effects of erosion except _____.
Loss of soil nutrients
Low productivity
Increase in crop yield
A material that blocks the flow of an electric current is called a/an ___________________.
insulator
conductor
circuit
What are some examples of insulators?
silver, iron, cooper
metal spoon, penny, aluminum
rubber, glass, wood
gold, wire, nails
____________is the process by which sediment settles out of wind and water.
What is the percentage composition of nitrogen in air?
78%
75%
86%
The amount of ____________ present in the air at a particular time is called humidity.
Water vapour
Rain water
Dust
Oxygen
Which amongst the following is not a property of air?
Air has mass
Air has volume
Air can be heated or cooled
Air is oxygen
What is the name of this separation technique?
distillation
filtration
evaporation
chromatography
