qu.1.topic=fill in blanks@

qu.1.1.mode=Blanks@
qu.1.1.name=Moon-2@
qu.1.1.editing=useHTML@
qu.1.1.question=Tides are due to differential gravitational forces between the Earth and moon.  At a given location on the Earth, tides 
rise and fall because the <1>.  There are two extremes of tides: $otherTide tides and $rightTide tides.  $otherTide tides are <2> tides when the 
moon and sun are <3>. $rightTide tides occur when the sun and moon are <4> and is signified by very <5> tides.
<br><br>
<STRONG><u>Facts related to eclipses</u></strong>
<UL>
<LI><6> eclipses are a type of <7> eclipse that occur when the moon is inside the Earth's "dim shadow".  These occur <8>, 
but only barely decrease the moon's brightness and are often not noticed. 
<LI>The moon appears reddish during a <9> eclipse.
<LI>During a partial lunar eclipse the moon is partly within the earth's <10> .
<LI>The umbra does not quite reach the Earth during an annular eclipse, so the sun is seen as <11> around the moon.
<LI>The best time to view the sun's outer atmosphere is when a <12> eclipse takes place.  
<LI>During $eclipse solar eclipse, the angular diameter of the moon is <13> that of the sun.  
<LI>The Saros cycle allows prediction of eclipse events quite accurately and has a period of about <14>.
</ul>@

qu.1.1.algorithm=
$num1 = rint(2);
$rightTide=switch($num1,"Spring","Neap");
$otherTide=switch($num1,"Neap","Spring");
$rightAlignment=switch($num1,"at right angles","aligned");
$wrongAlignment=switch($num1,"aligned","at right angles");
$height1=switch($num1,"low","high");
$height2=switch($num1,"high","low");

$num2 = rint(2);
$eclipse = switch($num2,"a total","an annular");
$rightComp = switch($num2,"larger","smaller");
$wrongComp = switch($num2,"smaller","larger");

@
qu.1.1.blank.1=Earth rotates,Earth revolves the sun,moon rotates,moon revolves the Earth@
qu.1.1.blank.2=$height1,$height2@
qu.1.1.blank.3=$rightAlignment,$wrongAlignment,at the zenith,on the horizon@
qu.1.1.blank.4=$wrongAlignment,$rightAlignment,on the horizon,at the zenith@
qu.1.1.blank.5=$height2,$height1@
qu.1.1.blank.6=Penumbral,Total,Annular,Partial@
qu.1.1.blank.7=Lunar,Solar,Minor,Major@
qu.1.1.blank.8=almost every month,daily,infrequently,during the equinoxes@
qu.1.1.blank.9=total lunar,total solar,penumbral lunar,annular solar@
qu.1.1.blank.10=umbra,penumbra,annulis,apogee@
qu.1.1.blank.11=a ring,a thin crescent,a gibbous,a large donut@
qu.1.1.blank.12=total solar,total lunar,annular,partial solar@
qu.1.1.blank.13=$rightComp than,$wrongComp than,the same size as@
qu.1.1.blank.14=54 years,108 years,18 years,36 years@

qu.1.1.grader.1=menu@
qu.1.1.grader.2=menu@
qu.1.1.grader.3=menu@
qu.1.1.grader.4=menu@
qu.1.1.grader.5=menu@
qu.1.1.grader.6=menu@
qu.1.1.grader.7=menu@
qu.1.1.grader.8=menu@
qu.1.1.grader.9=menu@
qu.1.1.grader.10=menu@
qu.1.1.grader.11=menu@
qu.1.1.grader.12=menu@
qu.1.1.grader.13=menu@
qu.1.1.grader.14=menu@