162969
Descripción
Test por PatrickNoonan, actualizado hace más de 1 año
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Creado por PatrickNoonan
hace más de 11 años
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Pregunta 1
Pregunta
All radioactivity is man-made. Is this statement…
Respuesta
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True
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False
Pregunta 2
Pregunta
Electrons are smaller than atoms. Is this statement…
Respuesta
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True
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False
Pregunta 3
Pregunta
Lasers work by focusing sound waves. Is this statement…
Respuesta
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True
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False
Pregunta 4
Pregunta
The continents on which we live have been moving their location for millions of years and will continue to move in the future. Is this statement…
Respuesta
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True
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Flase
Pregunta 5
Pregunta
Which one of the following types of solar radiation does sunscreen protect the skin from?
Respuesta
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X-rays
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Infrared
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Ultraviolet
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Microwaves
Pregunta 6
Pregunta
Does nanotechnology deal with things that are extremely…
Respuesta
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Small
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Large
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Cold
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Hot
Pregunta 7
Pregunta
Which gas makes up most of the Earth’s atmosphere?
Respuesta
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Hydrogen
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Nitrogen
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Carbon Dioxide
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Oxygen
Pregunta 8
Pregunta
What is the main function of red blood cells?
Respuesta
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Fight disease in the body
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Carry oxygen to all parts of the body
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Help the blood to clot
Pregunta 9
Pregunta
Which of these is a major concern about the overuse of antibiotics?
Respuesta
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It can lead to antibiotic-resistant bacteria
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Antibiotics are very expensive
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People will become addicted to antibiotics
Pregunta 10
Pregunta
Which is an example of a chemical reaction?
Respuesta
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Water boiling
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Sugar dissolving
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Nails rusting
Pregunta 11
Pregunta
Which is the better way to determine whether a new drug is effective in treating a disease? If a scientist has a group of 1,000 volunteers with the disease to study, should she…
Respuesta
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Give the drug to all of them and see how many get better
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Give the drug to half of them but not to the other half, and compare how many in each group get better
Pregunta 12
Pregunta
What gas do scientists believe causes temperatures in the atmosphere to rise?
Respuesta
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Carbon dioxide
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Hydrogen
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Helium
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Radon
Pregunta 13
Pregunta
Which natural resource is extracted in a process known as “fracking”?
Respuesta
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Coal
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Diamonds
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Natural gas
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Silicon
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