Question

Use a pencil to shade in the dark side of the moon in each of these eight moon posi- tions in Figure 26-1. Then shade the circles in Figure 26-2 to show how the moon would appear from Earth at each position in its orbit Crescen-) law> pb . FIGURE 2妓&ard do the lunar phases look like from Ealrth 1: What motion of the moon causes the phases we observe from Earth? thel hado amund the cartl 2. Figure 26-1 is partly to scale. What single change would make the whole diagram drawn to a single scale? 3. Figure 26-1 represents a specific time of year, what month(s) įs (are) shown in the / diagram? By looking at the light and shadow on Earth, how can you tell? 4. According to the Earth Science Reference Tables, which planets have the most and est moons? the planets that have the nibst nd 5. In the Earth Science Reference Tables, the table that contains the number of moons is not up to date with the latest discoveries. Astronomers have not agreed on a definition of what makes an object a moon. Formulate your own definition to help them distinguish moons from other objects that orbit the planets such as the rocks that make up the rings of Saturn and Jupiter you Can destinauish moon io n ather olas st in Figure 26-1 shows eight positions of the moon as it revolves around Earth. With re- spect to Earth, from where are we observing this?S uoHer Orbit of the Moon wangcous Light can scs rays Earth from moon the Sun waxing Crescen et FIGURE 26-1. Moon's orbit. ud Cl

Answer 1

For Figure 26.2

The moon would appear from earth at each position in its orbits in the following way:

The moon always keeps the same face towards the earth,i.e, rotation and revolution is synchronous.The moon produces no visible light of its own.

During the month we see a complete cycle of phase.

i)The sunward hemisphere is fully lit.

ii)The opposite hemisphere is dark.

.

In new moon

a)Moon and sun are on the same side of the sky

b)near side is in total darkness.

c)moon and sun rise together.

In full moon

a)moon is opposite side the sun in the sky

b)the near side is fully illuminated

c)moon rises as the sun is setting

Quarter moon

This type of quarter moon occurs when the earth,moon, and sun are at right angles.

a)Half of the near side is illuminated

b)Half of the far side is illuminated

Waxing

Waxing crescent:just after new moon

waxing gibbous:just before full moon

Wanning

Wanning crescent:just after full moon

wanning gibbous:just before newmoon.

ANSWERS

1)Moon is the ball of rock lit by the sun.As it orbits the earth,different parts of its surface is illuminated and we see the moon goes through a cycle of phases from new to full moon and back to new again.

2)In order to draw the whole diagram in a single phase we have to arrange in the following order

new moon,first quarter,waxing gibbous,full moon,wanning gibbous,last quarter,wanning crescent.

3)Lunar phase is gradually and cyclically change over the priod of a synodic month, a month where meeting of the sun and moon takeplace,

.We can know this as Moon phase is the periods of the moons orbit with respect to the line joining the sun and the earth .

4)According to the earth science reference table

the planet have most moon is jupiter

planet have fewest moon is earth and venus and mercury dont have any moon.

5)It is an astronomical body which orbits different planets,it is generally present near to the planet than any other celestial bodies.Atmospheric conditions are not favourable for life.

thank you..