Waves
What is the speed of light?
300,000 km/s
What is the center of an atom called?
Nucleus
Name the power structure of a cell?
Mitochondria
Name the three small bones in the ear.
hammer, anvil, and stirrup.
Who created the periodic table?
Dmitri Mendeleev
Why does sound travel faster in a hot medium?
The molecules have more energy and are moving faster.
What is smaller? A femtometer or a Picotometer
femtometer
Name a waste product produce by trees?
Oxygen and water
What are waves made by the movement of energy through the earth’s layers called?
seismic waves.
Who came up with the word atomos
Democritus
What is the hearing range of humans?
20hz to 20,000 hz
What is the octet rule?
Elements combine in such a way that each atom has eight electrons in its valence shell.
Elements combine in such a way that each atom has eight electrons in its valence shell.
What does DNA stand for?
deoxyribonucleic acid,
What are gases that do not react with other elements as they have full outer shells?
Nobel gases.
Who proved the presence of radio waves?
Heinrich Hertz
Henry Hertz
Hertz David
David Hertz
Heinrich Hertz.
Provide an answer to the following question. Why can light escape from a black hole and support your answer with scientific theory.
This is a false statement. Nothing can escape from a black hole. The color is black as nothing is reflected.
What is the most common bond in organic molecules which involves the sharing of electrons between two atoms.
covalent bond
What part of the digestive system stores bile?
Gall bladder
The study of Meteorology is about:
stars
atmosphere
planets
Meteors
atmosphere
Name the two scientist who identified the DNA molecule?
James crick and Francis Watson.
James Watson and Francis Crick.
James Smith and Fred Wilson.
James Wilson and Fred Smith.
James Watson and Francis Crick ?
Name the 7 types of electromagnetic waves from the lest powerful to the most powerful type of wave.
What is the electron configuration for the element neon?
8,2
Describe the interaction between two or more species, where species derive a mutual benefit for living together.
Mutualism
Socialism
Biodiversity
Mutualism
What kind of doctor looks after trees?
Tree doctor
Arborist
Biologist
Archaeologist
Arborist
Which scientist was the first to split the atom?
Ernest Rutherford.