WorksheetsReview Test 2: Soil & Light and Vision
Total questions: 40
Worksheet time: 55mins
What is soil?
It is the loose material in which plants can grow in the upper layer of Earth.
It is the leaf that grows on the plant.
It is the food that can be found inside the seed.
It is a playground to bugs.
Why is soil an important natural resource?
soil is used to make buildings
soil can grow crops
soil comes from bedrock
soil is color brown
Soil is made of ________________.
weathered rocks and minerals
dead plants and animals
air and water
all of the above
Humus is ________________.
the part of soil made up of decayed parts of once-living things.
a dip that is made of garbanzo beans.
a bone that can be found in the upper arm.
a sound people make when their lips are together.
How do decomposers work hand-in-hand with humus?
by removing gravel and sand from soil
by breaking down gravel into silt
by eating animals that may harm the soil
by breaking down the remains of dead plant and animal matter
A gardener wants to add humus to his soil because it contains a lot of nutrients and helps retain water. What does humus form from?
Sand
Rocks and minerals
Decayed animals and plants
Volcanic lava
Soil needs every component except:
air and water
humus - organic material
weathered rocks - sand, silt, and clay
gravel
Which soil is the worst for growing plants?
sand
silt
clay
loam
This type of soil is best for plant growth.
silt
sand
clay
loam
This type of soil is sticky when wet and hard when dry.
silt
sand
clay
loam
What is loam?
an even mixture of sand, silt, and clay
soil made of mostly sand
soil made of mostly clay
a mixture of gravel and sand
Which type of soil does water quickly pass through?
silt
sand
clay
loam
True or False: Sand has less humus than other soils.
True
False
True or False: Loam is one type of topsoil.
True
False
True or False: Sand is part humus and is the best type of soil to grow plants.
True
False
The three main types of soil are ________________.
humus, gravel, pebbles,
sand, clay, loam
gold, silver, bronze
topsoil, subsoil, bedrock
Which layer of soil is on the bottom?
topsoil
subsoil
bedrock
bottomsoil
Which layer of soil is on the bottom of a soil profile?
topsoil
subsoil
parent rock
bedrock
Which layer of soil are these roots growing in?
topsoil
subsoil
parent rock
bedrock
What is the layer of soil just below the topsoil?
topsoil
subsoil
parent rock
bedrock
True of False: We can see things around us because of light reflecting off the object and into our eyes?
True
False
How does the light travels?
Which of these is a natural source of light?
Which is NOT a source of light?
Which image shows the shadow of which this flower gives off?
When sun is behind you, your shadow is:
behind you
in front of you
at the side of you
not there
An opaque object means that ________________________.
light passes through
no light passes through
some light passes through
you can see through it
If you can see light through an object it is called _____________.
opaque
transluscent
transparent
plastic
True of False: Translucent objects let only some light to pass thru.
True
False
Which of the following objects is an example of transluscent media?
sheet of thin tissue paper
glass window
wooden chopping board
moon
Which bottle does not let light pass through?
Reflection is when light _______________.
Bends
Bounces
Absorbs
Dances
Refraction is when light ____________.
Bends
Bounces
Absorbs
Dances
Which of the following image shows reflection of letter R?
What is happening in this picture?
Reflection
Refraction
What is happening in this picture?
Reflection
Refraction
What are the two jobs of a lens?
focus and magnify
focus and flip
focus and see
flip and see
The type of lens that has a surface that curves outward. Rays of light that passes through are brought closer together.
Convex
Concave
Type of lens that has a surface that curves inward. Rays of light that passes through are spread out.
Convex
Concave
Which of the following does NOT have a lens?
