NEW
Font size
WorksheetsScience 7 Recall
Total questions: 20
Worksheet time: 4mins
It is an instrument used to obtain a magnified image of minute objects or minute detail of objects.
microscope
test tube
computer
lens
What makes prokaryotes different from eukaryotes?
They do not have true nucleus and membrane-bound organelles
They are larger and have more chromosomes
They are present in higher forms of organisms
They have a distinct nucleus and organelles
What is the total magnification of the image of an object under a microscope if the ocular has a magnification of 5x while the objective lens is 10x?
50x
40x
15x
5x
These organelles are found only in plant cells and make plants unique to other living things.
vacuole & lysosomes
capsule & flagellum
ribosomes & cell membrane
plastids & chloroplasts
It is a step-by-step procedure by which information is obtained in a precise and orderly manner, and from which conclusions can be drawn.
inquiry
forecast
observation
scientific method
It is the possible solution to the problem; also known as “educated guess”.
conclusion
hypothesis
experiment
inference
It is a classification of matter which exists in one phase and cannot be separated by physical means.
pure substance
alloy
mixture
solution
Which is true about solutes?
It is the dissolving medium
It is present in lesser amount
it is dissolved in a substance
2nd & 3rd choices
This idea or statement forms and supports the cell theory.
All living things are made of cells
All plants and animals are made of cells
All cells arise from preexisting cells
ALL OF THE ABOVE
The following are colloids, EXCEPT:
peanut butter
toothpaste
mouthwash
ketchup
A motorbike has an average speed of 3 m/s. Which of the following is TRUE about the motion of the motorbike?
It can travel 3km in one hour.
It can travel 6 meters in 2 seconds.
It travels 1.5 meters in 1.5 seconds.
It takes 3 seconds to travel 1.5 meters.
Which of the following quantities describes motion?
distance
mass
velocity
weight
Which of the following is designated as zero degree (0°) longitude and passes through the town of Greenwich in England?
antemeridian
meridian
prime meridian
post meridian
Which of the following pairs is correct?
distance – meter
displacement – second
acceleration – kilometer per hour
speed – meters per square second
Which indicates waves with highest frequency?
10 GHz
1 MHz
3 Hz
200 kHz
It is the blanket of air that surrounds the Earth.
hydrosphere
lithosphere
atmosphere
biosphere
Which of the following gases are generally found in the found only in the lower atmosphere or at the troposphere?
helium
hydrogen
water vapor
oxygen
Which of the following is expressed in azimuthal notation?
225°
S45°
60°SW
15° south of west
Which of the following is correct about absolute location?
It is defined in relation to a reference point.
It is measured from the north or east of a place.
It is expressed in terms of latitude and longitude.
It is measured from the south or a west place.
In which layer does the temperature drop with altitude?
stratosphere
mesosphere
troposphere
exosphere
