An __________ examines the heart's electrical activity.
ECG
A __________ produces electricity from mechanical energy.
Generator
__________ is a treatment for kidney failure.
Dialysis
The telephone was invented by __________.
Alexander Graham Bell
The chemical formula of hexane is __________.
C6H14
Fire extinguishers commonly use __________ gas.
Carbon dioxide (CO2)
The human ear can hear frequencies between __________ and __________ Hz.
20 to 20,000
The filament of a bulb is made of __________.
Tungsten (commonly)
__________ is produced by the pancreas to regulate blood sugar.
Insulin
TV remote controls use __________ rays.
Infrared
Normal blood pressure is around __________ mmHg.
120/80
Atmospheric pressure is measured by a __________.
Barometer
Chemical energy conversion takes place in a __________.
Cell
Chlorine is used for __________ purification.
Water
Stars shine because they produce __________.
Their own light
The most consumed staple food worldwide is __________.
Rice
__________ is used as a non-metallic water purifier.
Chlorine
Light is a form of __________ energy.
Electromagnetic
The SI unit of energy is __________.
Joule
The most electronegative element is __________.
Fluorine
An electric motor converts electrical energy into __________ energy.
Mechanical
1 Kcal equals __________ calories.
1000
The chemical symbol for oxygen is __________.
O
Tuberculosis is a __________ disease.
Communicable
Steel is an alloy of __________ and __________.
Iron and carbon
Humans have __________ chromosomes.
46
Insulin deficiency causes __________.
Diabetes
Diamond is known for its extreme __________.
Hardness
__________ is transmitted by the female Anopheles mosquito.
Malaria
Iron deficiency causes __________.
Anaemia
The study of the universe is called __________.
Astronomy
The first cloned mammal was __________.
Dolly the sheep
The ozone layer functions to protect from __________ radiation.
Ultraviolet (UV)
Photosynthesis releases __________ as a byproduct.
Oxygen (O2)
__________ is a poisonous gas produced by incomplete combustion.
Carbon monoxide
__________ pollution can cause asthma.
Air
The chemical symbol for gold is __________.
Au
The chemical formula of ozone is __________.
O3
Inertia is described in Newton's __________ law of motion.
First
Foot and mouth disease affects __________.
Animals
The steam engine was invented by __________.
James Watt
An adult human has __________ teeth.
32
A __________ is used to indicate direction.
Compass
Electrical resistance is measured in __________.
Ohms
In computer science, a __________ is the smallest unit of data.
Bit
Stars appear to twinkle due to __________ of light.
Refraction
Frequency is measured in __________ per second.
Oscillations
Magnification is the ratio of __________ to __________.
Image size to object size
Water purification is done by __________.
Chlorination
__________ is an important energy source in the body.
Glucose
Asthma affects the __________ system.
Respiratory
__________ is a blood disorder caused by low red blood cells.
Anaemia
Energy conservation is the principle of __________.
Preservation
Weight is commonly measured in __________.
Pounds
Batteries produce __________ current.
Direct
__________ is the hardest natural substance.
Diamond
Hair, nails, and hoofs are made primarily of __________.
Protein
The relationship between pressure and volume of a gas is described by __________.
Boyle's law
Enzymes are made of __________.
Proteins
__________ is an alloy of zinc and copper.
Brass
Uniform speed means equal __________ and __________ over time.
Distance and time
The hydrogen bomb was developed by __________.
Edward Teller
The largest gland in the human body is the __________.
Liver
The ozone layer protects us from __________ rays.
Ultraviolet (UV)
Nylon is a __________ fiber.
Synthetic
__________ is the richest dietary source of calcium.
Milk
Increasing forest wealth helps __________.
Environment
Atmospheric pressure is measured in __________ in the SI system.
Pascal
Density is measured in __________ units in the CGS system.
g/cm³
Tides on Earth are caused by __________ force.
Gravitational
The Doppler effect is related to changes in __________.
Sound frequency
Copper has the atomic number __________.
29
__________ makes plant leaves green.
Chlorophyll
Agar is obtained from __________ algae.
Red
Gunmetal is an alloy of copper, tin, zinc, iron, and __________.
Lead
Light is a form of __________ radiation.
Electromagnetic
AIDS is transmitted by __________ infection.
Viral
CNG stands for __________.
Compressed Natural Gas
A __________ converts mechanical energy into electrical energy.
Generator
__________ is an infectious disease caused by a virus.
Rabies
A __________ is a mammal commonly found on farms.
Cow
The ozone molecule contains __________ oxygen atoms.
Three (O3)
Pressure is defined as force divided by __________.
Area
__________ is a poor conductor of electricity.
Wood
__________ discovered oxygen.
Joseph Priestley
A __________ converts chemical energy into electrical energy.
Cell
Jaundice affects the __________.
Liver
Pulse rate measurement helps determine __________ rate.
Heart
AMU stands for __________.
Atomic Mass Unit
The sun is a natural source of __________.
Light
The largest mammal is the __________.
Blue whale
Tuberculosis is an __________ disease.
Airborne
A photocell converts __________ energy into electrical energy.
Light
The chemical symbol for mercury is __________.
Hg
A __________ is used to control the speed of a fan.
Regulator
The purest form of water is __________.
Rainwater
Acids are stored in __________ containers.
Glass
A healthy person's pulse rate is __________ to __________ beats per minute.
70 to 80
The plague is spread by __________.
Flies
Sound cannot travel through a __________.
Vacuum