WorksheetsRevision-Soil, Motion and Time, & Respiration in Organisms
Total questions: 41
Worksheet time: 26mins
Question 1:
A higher ______ seems to indicate that a given distance has been covered in a shorter time, or a larger distance covered in a given time.
Motion
Speed
oscillation
Question 2.
We call the distance covered by an object in a unit of time as the (a) of the object
Question 3.
i. An object moving along a straight line keeps changing speed, its motion is said to be _____
ii. An object moving along a straight line with constant speed, its motion is said to be _____
i. Uniform, ii. Non-uniform
i. Non-uniform, ii. non-uniform
i. Non-uniform, ii. Uniform
i. Uniform, ii. Uniform
Question 4.
One of the most well-known periodic motion is that of a _____
rolling ball
hands swinging while marching
day and night
simple pendulum
The metallic ball of a pendulum is called a (a)
Question 6.
The to and from motion of the pendulum is an example of periodic or _____ motion
circulatory
oscillatory
rotational
rectilinear
Question 7.
Time taken for 70 oscillations is 141 seconds. How much is the time period for one oscillation. (write the number followed by secs, no space or full stops needed.)
(a)
Question 8.
Choose the correct equation.
speed = distance/time
distance = time/speed
time = time x (speed/distance)
Question 8.
Clocks and watches having an electric cell with one or more cells is called _____
Grandfather clocks
analog watches
Quartz clocks
The rotting dead matter in the soil is called
top soil
C- horizon
manure
humus
The breakdown of rocks by the action of wind, water and climate. This process is called percolation
true
false
What is the correct option for the previous question?
Percolation
Weathering
erosion
All of the above
A vertical section through different layers of the soil is called (a) (no caps, no full stops, all small letters.)
Which is the hardest horizon?
A- horizon
C- horizon
None of the above
Bedrock
Percolation rate is highest in??
sandy soil
loamy soil
clayey soil
both a and c
Each layer differs in texture, depth, color, and chemical composition. These layers are referred to as_____
top soil
soil profile
horizons
answers b and c
what is the basic unit of time?
minute
hour
millisecond
second
what is the basic unit of speed?
m/min
m/h
km/h
none of the above
m/s
a nanosecond is one________ of a second
millionth
bilionth
trillionth
something else.
Boojho saw a question in his textbook on motion time graphs. He does not know well about the subject. Can you help him? Which statement is true?
Picture(a) is in non-uniform motion
Picture(b) is in uniform motion
Picture(a) is in uniform motion
Picture(b) is in non-uniform motion
The process of breakdown of food in the cell with the release of energy is called
Digestion
Excretion
circulation
respiration
Glucose in the presence of carbon dioxide =
Oxygen+water+energy
true
false
choose the correct statement.
The taking in of air rich in O2 into the body is called exhalation and giving out air rich in CO2 is called inhalation.
The taking in of air rich in CO2 into the body is called exhalation and giving out air rich in O2 is called inhalation.
The giving out of air rich in O2 into the body is called exhalation and taking in air rich in CO2 is called inhalation.
The giving out of air rich in CO2 out of the body is called exhalation and taking in air rich in O2 is called inhalation.
Glucose, in the absence of oxygen in muscle, = ?
lactic acid, energy
CO2, energy
O2, energy
None of the above
"When we inhale, the air passes through our nostrils into the (i)_______. From the (i)______, it reaches our (ii)_____ through the windpipe or (iii)_____. A large muscular sheet called the (iv)_____ forms the floor of the chest cavity."
i. windpipe, ii. diaphragm, iii. chest cavity, iv. nostrils.
i. nostrils, ii. trachea, iii. lungs, iv. diaphragm.
i. nostrils, ii. lungs, iii. trachea, iv. diaphragm.
None of the above.
During inhalation, the ribs
move outward
move upward
move downward
do not move at all.
what are anaerobes?
can live in the absence of oxygen
can live in the absence of carbon dioxide
can live in the absence of any air at all
cannot live with the absence of oxygen
when food is broken down using oxygen, it is called,
aerobic respiration
anaerobic respiration
excretion
digestion
Paheli was learning about breathing rates. "What is the average breathing person of a human adult?" she thought. Can you answer her question?
28, breathes/min, can increase up to 18 when doing heavy exercise.
15, breathes/min, can increase up to 18 when doing heavy exercise.
15-28, breathes/min, can increase up to 18 when doing heavy exercise.
15-18, breathes/min, can increase up to 38 when doing heavy exercise.
none of the above
If it is none of the above, can you give the correct answer?
15-18 breathes/min, can increase up to 18 when doing heavy exercise.
15-18 breathes/min, can increase up to 28 when doing heavy exercise.
which of the following is a correct example of anaerobes?
humans
seaweed
yeast
Answer b and c
A speedboat travels 60 kilometers in 40 mins. How many meters will it travel in an hour?
90
900
9000
90000
A car is travelling down a straight road.
When it started, it traveled at a speed of 20km/h. It increases speed by 6km/h every minute. At the end of 10 mins, what is its speed in km/h?
80 km/h
90 km/h
100 km/h
170 km/h
Boojho was doing an experiment with a soil sample. He noted that the water took 5 minutes to percolate. What is the percolation rate, if the amount of water was 75ml? (write the number ONLY.)
(a)
Next to Boojho, Paheli was also doing experiments with the three types of soil- sandy, clayey, and loamy soil. She asked Boojho, "Which type is likely to have the lowest percolation rate?" Can you answer?
sandy
clayey
loamy
both a and c
Fill the blanks in the following passage.
"(i)_____ and (ii)_____ soil are used to cultivate cereals like wheat and gram. Such soils are good at retaining water. For paddy, soils rich in (iii) _____ and organic matter are ideal. For lentils and other pulses, (iv)_____ soils are required. For cotton, (v) ______-loam or loam, which drain water easily and can hold plenty of air, are more suitable."
i. Clayey ii. Sandy iii. loam iv. sandy v. clay
i. Sandy ii. Loamy iii. clay iv. sandy v. clayey
None of the above
i. Clayey ii. loamy iii. clay iv. loamy v. sandy
we get relief from cramps after
hot water bath
drinking warm water
massage
both a and c
tick the characteristics of yeast.
they are multi-celled.
they respire anaerobically.
they yield alcohol during respiration.
they are a type of bacteria.
during exhalation, the ribs
move down
move outwards
move up
move inwards.
Tick the correct movement of the diaphragm.
down during exhalation
back up during inhalation
back up during exhalation
down during inhalation.
inhaled air contains
16.4% oxygen
4.4% carbon dioxide.
0.04% carbon dioxide
21% oxygen
