Grade Nine Science. Space Unit. http://www.youtube.com/watch?v=SWOoV4b49SI. What can we see in the sky?. What are some things that we can see in the sky?. Something that people have noticed and documented throughout time is that there are patterns in what we see in the sky. Constellations
Something that people have noticed and documented throughout time is that there are patterns in what we see in the sky.
The solar system consists of our sun and all the objects that travel around it.
Only 5 of the planets in our solar system can actually be seen with an unaided eye: Venus, Mars, Jupiter, Saturn and Mercury.
Hubble Deep Field
The universe is everything that exists, including all matter and energy everywhere.
The outer planets include: Jupiter, Saturn, Uranus, Neptune, and Pluto (a dwarf planet). They are mostly huge, mostly gaseous, ringed, and have many moons (again, the exception is Pluto, the dwarf planet, which is small, rocky, and has one large moon plus two tiny ones).
The planets of the solar system are made up of different combinations of chemical elements which is why no two planets are the same.
These common elements are found under high pressure on the Sun and on the four largest planets.
The largest baseline available is the diameter of the Earth’s orbit. This is used to help scientists calculate distances to the stars nearest to our solar system.
The light year is another measurement of distance that scientists use.
Every second the Sun makes more energy than humans have used throughout our entire history.
Solar flares emit charged particles, which travel much slower than light.
A spectroscope is an instrument used by astronomers to look at the light given off by the Sun and other stars.
The Sun has stronger gravity than Earth.
The force gets smaller as the distance between objects increases.
More particles begin to pack together and eventually the clumps are dense and not enough for nuclear fission to start.
Crystal form. the structure (blocks, cubes, etc.) of the tiny particles of a solid that are repeated throughout a sample of that solid (i.e. salt crystals all have the same shape)
Viscosity – is how easily a liquid flows: the thicker the liquid, the more viscous it is
m = D x V V = m / D
If a rock has a mass of 49 g and occupies a volume of 7 cm3, what is the density?
D = m / V
= 49 g / 7 cm3
= 7.0 g/ cm3
D = m / V
= 250 g / 14.5 cm3
= 17.24 g/ cm3
D = m / V
= 100g / 46 cm3
= 2.17 g/ cm3
D = m / V
V = m / D
= 15 g / 2.6 g/cm3
= 5.77 cm3
D = m / V
M = D x V
= 6.85 kg/L x 3.4 L
= 23.29 kg
** Note that volume can be expressed as cm3, m3, ml or even L.
Create a simple map of your home and indicate where you would have found products with some of the hazardous household product symbols that we have discussed.
Ex.) Aluminum foil contains only aluminum foil particles.
combination of Calcium and Oxygen
* CaCl2 ► 1 atom calcium, 2 atoms of chorine.
combination of Calcium and Chlorine
Ion – an atom that has become charged by gaining or losing one or more electrons.
The particles that atoms are made of.
The number of protons in an atom is called an atomic number. If you know the atomic number of an atom then you know how many protons and electrons that atom contains.
# of neutrons = mass number – atomic number
Mendeleev invented the periodic table by looking at patterns in the properties of different groups of elements.
# 1 - 5
( He, Ne, Ar, Kr, Xe, Rn )
* All gases at room temperature, the noble gases are often called inert gases because they are so unreactive, almost never forming chemical compounds.
Eg. Wood, diesel oil, and kerosene
Hydrocarbon + oxygen => carbon dioxide + water
Answer questions 1-5 on page 39