Science Textbook Summer Vacation Workbook Page 69 Question 2

Gemini has two very bright stars, and in the west these two stars symbolize the pair of twin brothers named Gemini. One of the fainter stars (Beihe-2) is a binary star in a telescope (in fact, it is even a sextinct star). The other stars are fainter.

It can only be seen under the city lights. Pluto was discovered in 1930 near the δ in Gemini.

In the constellation Leo, the δ and three stars form a very significant triangle, which is the back and tail of the lion; From to these six stars form the shape of a sickle, and like a question mark written backwards, this is the head of a lion, and it can be found by connecting the pole star of Ursa Major (i.e., the two stars at the mouth of the spoon) in the opposite direction to the North Star. The star is called Xuanyuan XIV in our country, and its apparent magnitude is located in the heart of the constellation Leo, which is also the point of the question mark written backwards, and is the brightest star in the constellation Leo, and the twenty-first brightest star in the whole day. It forms an isosceles triangle with Horn Major and Horn Decidea, extending the constellation Ursa Major to δ and stars ten times as far away.

In ancient times, it was often used by navigators to determine the position of a ship in the sea, so Leo was awarded the title of "one of the nine stars of navigation".

There are 50 stars in the constellation Pisces, the brightest star is the right two (Pisces), and the apparent magnitude is. The current vernal equinox is located near the five of Perak (Pisces). Although Pisces is a larger constellation, the stars that make up the constellation are all dim.

Pisces is most easily recognizable by the two Pisces rings, especially the Pisces ring, which is made up of stars such as Pisces and other stars immediately south of Pegasus. Another small Pisces ring is located east of the constellation Pegasus and is made up of stars of magnitude Pisces and 1. This constellation has a Messier object:

M74, near the second right of the brightest star in the constellation Pisces.

You have to write the title to have someone.

Meaning that something in the ridge of the earth is 1 kilogram on the moon is kilogram) question pants Min 1:

Question 2:34

Study hard, I just graduated from Xiaohu Yezhi this year

P=F S3500 10 kg 10N kg (25m 16)

87500pa

Back to the bench p is the pressure.

f is the force of the box on the airbag.

s is the total contact area between the box and the airbag

By "putting the bottle in a bowl, quickly filling the bottle with water, and immediately tightening the cap and lifting the bottle", there is no air in the bottle, so it is the outside atmospheric pressure that holds the water in the bottle.

Because the pressure inside the bottle is less than the atmospheric pressure.

32.Evaporation and boiling.

33.Sublimation, liquefaction, coagulation, melting, solidification, evaporation.

34.I don't know.

35.Purple. Red.

Purple. Blue. 39.hydrogen-h-1;

Oxygen-O-8;

41.Water is made up of hydrogen and oxygen.

1) Steam limb cavity teasing oil.

2) Dry corn.

Sorry, the rest is still sold and not studied