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WorksheetsScience Fair Quiz-Senior High School
Total questions: 30
Worksheet time: 15mins
Place of gas exchange in lungs is ...
Bronchus
Bronchiolus
Alveolus
Trachea
Increasing earth temperature because of global warming is will caused...
Acid rain
Coral whitening
Cooling temperature
Mutation
This animal is classified into class insecta because ...
Have segmented body
Have 3 pair legs
Have wings
Have small head and big abdomen
Harmless bacteria that usually live in human colon.
Escheresia coli
Entamoeba coli
Enterobacter coli
Enterococcus coli
Which of the following organism is called an obligate parasite (a parasitic organism that cannot complete its life-cycle without exploiting a suitable host)?
Fungi
Protozoa
Virus
Algae
A thin polar membrane made of two layers of lipid molecules.
Phospolipid bilayer
Cholesterol
Glycoprotein
Protein channel
Site of blood formation.
Joint
Cartilage
Red bone marrow
Osteocyte
Adaptation mechanism of cacti to preventing water loss in hot dry condition.
Shedding their leaves
Having a widespread fibrous root system
Producing more leaves
Not produce fruits
Human organ that have function of detoxify toxin.
Heart
Liver
Lungs
Intestine
Symbiotic between fungi and algae is called ....
Polyp
Lichens
Mycoalgae
Mosses
What is it more difficult to walk on a sandy road than on a concrete road?
Because sand is soft and concrete is hard.
Because the friction between sand and feet is more than that between concrete and feet.
Because the friction between sand and feet is less than that between concrete and feet.
Because the sand is grainy but concrete is smooth.
Why does it take much longer to cook food in the hills than in the plains?
Because in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100ºC causing an increase in cooking time.
Because low atmospheric pressure on the hills, the water boils at a temperature higher than 100ºC and therefore water takes longer to boil.
Because in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere.
Because in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking.
A sealed cylindrical steel can is situated below the surface of water.
What is the origin of the up thrust that acts on the can?
The air pressure in the can is less than the water pressure outside the can.
The average density of the air and steel is less than the density of water.
The water pressure on the bottom of the can is greater than the water pressure on the top.
The weight of displaced water acts upwards on the can.
A boat is travelling at a steady speed in a straight line across the surface of a lake.
Which statement about the boat is correct?
The resultant force on the boat is in the direction of motion.
The resultant force on the boat is in the opposite direction to its motion.
The resultant force on the boat is vertically downwards.
The resultant force on the boat is zero.
A see-saw is made by resting a long plank of wood with its center of mass on a barrel.
A boy sits on one side of the barrel and a girl sits on the other side so that the see-saw is balanced.
Which statement must be true?
Boy’s weight = girl’s weight
Distance x = distance y
Total downward force = total moment about the barrel
Resultant force and resultant moment are both zero
The diagram shows sections of four objects of equal mass.
The position of the center of mass of each object has been marked with a cross.
Which object is the most stable?
A
B
C
D
A man holding a starting pistol stands 640 m away from a spectator.
The spectator hears the sound of the starting pistol 2.0 s after seeing the flash from the pistol.
Using this information, what is the speed of sound in air?
160 m / s
320 m / s
640 m / s
1280 m / s
A pendulum bob is held stationary by a horizontal force H.
The three forces acting on the bob are shown in the diagram.
The tension in the string of the pendulum is T.
The weight of the pendulum bob is W.
Which statement is correct?
H = T cos 30°
T = H sin 30°
W = T cos 30°
W = T sin 30°
A ball is kicked upwards at an angle of 45° to horizontal ground.
After a short flight, the ball returns to the ground.
It may be assumed that air resistance is negligible.
What is NEVER zero during the flight of the ball?
the horizontal component of the ball’s acceleration
the horizontal component of the ball’s velocity
the vertical component of the ball’s momentum
the vertical component of the ball’s velocity
In an experiment to determine the acceleration of free fall g, a ball-bearing is held by an electromagnet.
When the current to the electromagnet is switched OFF, a clock starts and the bearing falls.
After falling a distance h, the ball-bearing strikes a switch to stop the clock which measures the time t of the fall.
Which expression can be used to calculate the value of g?
Choose a word from the list bellow which describe the positive electrode!
Anion
Anode
Cation
Cathode
Which one of the following is the common name for calcium hydroxide?
Cement
Limestone
Limewater
Slaked lime
Ant sting contain methanoic acid.
What household substance could be used to ease the effect of the sting?
Baking soda
Toothpaste
Vinegar
Salt
What is the color of universal indicator in sugar solution?
Red
Purple
Green
Blue
A pH meter measures the ....................... of a substance.
toxicity
taste
acidity
color
Which of the following an exothermic process?
melting ice
boiling water
sublimation of dry ice
water vapor condensing
For the reaction...
SO2 + O2 <−> SO3
If the concentration of SO2 is increased, the equilibrium of the reaction will shift ....................
Left
Right
Left and right
neither left nor right
When a solution holds all the solute it can at room temperature, it is ....................
Unsaturated
Saturated
Supersaturated
Solubility
The reaction that’s occurred during soap making process is ...............
Sabunifikasi
Samponifikasi
Saponification
Soaponification
Which of the following halogen elements is a liquid at room temperature?
iodine
fluorine
bromine
chlorine
