Space Junk Stars Days/years/ seasons Moon/tides/ Eclipses Pot Luck

100 This piece of space junk orbits between Mars and Jupiter.

100a Asteroids html

200 This type of space junk has a highly elliptical path.

200a Comets s/comets.html

300 This type of space junk does not burn up in our atmosphere.

300a Meteorite (It impacts the Earth.) 65 million years ago a disaster happened, although we are not sure of the cause. All the dinosaurs and many other groups of animals and plants became extinct around this time. The most popular theory is that a mountain-sized meteorite hit the Earth, throwing up a thick cloud of dust and causing tidal waves and global forest fires. The dust hid the Sun. This might have killed many plants, which need light to live. It might also have cooled the Earth and so killed the dinosaurs which, being unable to keep themselves warm, might have stopped moving and so starved.

400 This type of space junk can be composed of rock, metal, or both.

400a Asteroids

500 This type of space junk is composed of frozen gas and dust AND may orbit in the Oort Cloud or Kuiper Belt.

500a Comets

100 Star’s that are this color have a cooler temperature.

100a Red

200 Stars begin their life in a stellar nursery called ________

200a Nebula

300 Small Stars like our sun end their life as a _________ then a _________.

300a White dwarf then black dwarf

400 How long a star lives depends on

400a The original mass of the star.

500 The largest type stars will end their life as

500a Black Holes

100 The Earth moves from daylight to darkness once every day due to fact that it is

100a Rotating

200 The Earth will make one trip around the sun each year. This movement is called

200a Revolution Earth is farthest from the Sun at its aphelion (summer in the Northern Hemisphere) and closest during its perihelion (winter in the Northern Hemisphere).

300 In which direction do both the Earth and Moon rotate and revolve

300a Counter-clockwise phases/phases4.html

400 In the spring and fall the sun is directly over _______

400a The equator. It is overhead at the equator during the Spring and Fall equinoxes. The Sun is overhead at the Tropic of Cancer on June 21. This is the furthest north that the strongest rays will travel. It is overhead at the Tropic of Capricorn on December 21.

500 The three reasons for the seasons are

500a The tilt of the Earth, revolution around the sun, direct/indirect light that reaches Earth’s surface. ***Notice how the location of the most direct rays change as the Earth revolves around the sun.

100 What conditions are necessary for a spring tide to occur?

100a The positioning of the sun and the moon also has an effect on the height of the tidal swell. During a new or full moon phase, the sun and moon are in line, pulling on the earth's surface. This creates a higher level of tide - called the "spring tides" from the Welsh word "springan" meaning 'to bulge'.

200 What percentage of the moon is always illuminated?

200a 50%

300 The image is a model of ??

300a Solar Eclipse. A solar eclipse can occur when there is a new moon. This does not occur every month because the moon's orbital plane doesn't "lie flat" along the ecliptic, but forms an angle of about 5º as you can see in this diagram (note: the distances in this diagram are not to scale).

400 This image is an example of ????

400a A waning crescent moon

500 The phases of the moon are due to ________

500a The position of the Earth, Sun, and Moon. **Light on right, moon is getting bright.

100 The unit of measurement that scientists use to measure distances in space.

100a Light years Distances in space are huge and if we used miles or kilometers our data (numbers) would be huge. One light year is equal to an extremely long distance - 5,865,696,000,000 miles to be exact! The closest star to the earth, not counting our own sun, is Alpha Centauri. This star, our solar system's closest stellar neighbor is 4.3 light years away from the earth! This means that t he closest star to the earth (besides the sun) is >>>> 23,462,784,000,000 miles away from us!solar system's

200 Galaxies are classified by ??

200a Their shape. The Milky Way Galaxy is a spiral galaxy.

300 Billions of stars clustered together are called???

300a Galaxies This is a picture of an irregular galaxy.

400 What two forces keep our planets in orbit around the sun?

400a Gravity and Inertia (sideways motion in image).

500 Why can Hubble take clearer pictures that Earth based telescopes?

500a It is above our “pesky” atmosphere.