Astrophysics

3) Make a pneumonic for the order of the planets:

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

My Very Educated Monkey Just Sat Uncomfortably Naked

4) Compare sizes of planets with circles

http://www.google.co.th/imglanding?q=planet%20sizes&imgurl=http://hyperphysics.phy-astr.gsu.edu/hbase/solar/imgsol/psize.gif&imgrefurl=http://hyperphysics.phy-astr.gsu.edu/hbase/solar/sizes.html&usg=__KzUp-rOcpR2Kx8pWWukoJPWSTJI=&h=335&w=342&sz=5&hl=th&zoom=1&um=1&itbs=1&tbnid=X0xyO42EuscbNM:&tbnh=118&tbnw=120&prev=/images%3Fq%3Dplanet%2Bsizes%26um%3D1%26hl%3Dth%26sa%3DN%26tbs%3Disch:1&ei=8g9iTa_MOo3NrQfIm4SxAQ&um=1&sa=N&tbs=isch:1&start=12#tbnid=X0xyO42EuscbNM&start=16

5) Define:

Asteroid: Small rocky body that drifts around the Solar System.

Meteoroid: An asteroid on a collision course with another planet.

Meteorite: Small meteors can be vaporized due to the friction with the atmosphere (‘shooting stars’) whereas larger ones can land on Earth. The bits that arrive are called meteroties.

Comet: Mixtures of rock and ice (a ‘dirty snowball’) in very elliptical around the Sun. Their ‘tails’ always point away from the Sun.

Stellar Cluster: Group of stars that are physically close to each other, created by the collapse of the same gas cloud.

Constellation: Patterns of stars.

Light year: The distance light travels in 1 year.

6) Compare distances between stars and between galaxies

(From Physics IB Study Guide by Tim Kirk) 

7) Describe the motion of constellations over

1 night

They appear to rotate around in one direction. In the Northern hemisphere, everything seems to rotate around the North Star.

1 year

(From Physics IB Study Guide by Tim Kirk)