The throwing back by a body or surface of light, heat, or sound without absorbing it.
What is reflection?
100
H, He, Li, Be, B, C, N, O, F, Ne.
What is the first 10 elements in the Periodic Table?
100
Deoxyribonucleic Acid
What does DNA stand for?
200
August, 2006.
When was Pluto declared no longer a planet?
200
the fact or phenomenon of light or radio waves, being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
What is refraction?
200
K
What is the symbol for Potassium?
200
23 pairs making a total of 46.
How many Chromosomes does a human have?
300
He discovered:
- That the Earth is not the centre of the Solar System
- Four of Jupiter's moons
- Saturn's rings
What did Galileo Galilei discover?
300
300m
How far does sound travel in one second in the Earth's atmosphere?
300
117
How many elements are there on the Periodic Table?
300
It is a special type of cell division which takes place in the ovaries or testes.
What is Meiosis?
400
31 Moons
How many known moons does Saturn have?
400
An oscilloscope.
What is the instrument called that allows you to test different sounds for different wavelengths?
400
1869
What year was the Periodic Table created?
400
Dominant and Recessive
What are the two types of traits that can be found in your genes?
500
Known for revolutionising our view of the universe. He was able to show that what people thought were "spiral nebulae" were actually other islands of stars that lay far beyond the breadth of our own galaxy.
Besides this, he was able to use the technique he had employed to prove the existence of galaxies to show that the entire universe was expanding.
What was Edwin Hubble's contribution to science?
500
Ophiuchus
What constellation is found during Nov. 29 - Dec. 17?