myTestBook.com Math Reading Science Practice Test for Grade 1, 2, 3, 4 & 5    
  you are taking the following test:

 
Grade: 4,    Subject: LanguageArts,    Topic: Reading Non-Fiction
See the following text/image to answer questions 1 through 5
A tornado is a violently rotating column of air extending from a thunderstorm to the ground. Tornadoes come in many sizes but are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris.

Most tornadoes have wind speeds of 130 mph (177 km/hr) or less. They are approximately 250 feet (75 m) wide, and travel a few miles (several kilometers) before dissipating. Some tornadoes can be one mile (1.6 km) wide and stay on the ground over 50 miles (80 km). The average forward speed is 30 (48 km/hr) mph but may vary from nearly stationary tornados to 70 mph (112 km/hr). The strongest tornadoes have rotating winds of more than 250 mph (400 km/hr).

There are four different types of tornados. These are Multiple Vortex, Satellite, Waterspout and Landspout. A multiple vortex tornado is a type of tornado in which two or more columns of spinning air rotate around a common center. A satellite tornado is a term for a weaker tornado, which forms very near a large, strong tornado. A waterspout tornado is simply a tornado over water. Tornadoes that are not associated with any big storms and originate in a fair weather are called Landspout tornadoes.
 
Question 1:
______________ is a type of tornado in which two or more columns of spinning air rotate around a common center.

A SatelliteA Landspout

A multiple vortexA Waterspout
 
Question 2:
What is the wind speed in most of the tornadoes?

250 mph130 mph

13 mph77 mph
 
Question 3:
What is the approximate width of a tornado?

77 m80 km

250 m75 m
 
Question 4:
Which of the following happens in a tornado?

high windheavy snowfall

shaking and ground rupturenone of the above
 
Question 5:
What is the term used for a weaker tornado?

Landspout tornadoSatellite tornado

WaterspoutVortex tornado
 
Question 6:
What is lava?

ice sheetcold, brittle rock

high-velocity flow of snow down a mountainsidehot, molten rock
 
See the following text/image to answer questions 6 through 10
Volcanoes are opening on the Earth's surface where lava (very hot, molten rock), steam, poisonous gaseous, ash and broken rock fragments erupt through the opening. Volcanoes are usually made when two tectonic plates move toward each other. When these two plates collide, one of them goes under the other one plate. Because of the high energy in the movement of plates, plates melt and form magma. The magma is formed inside the magma chamber. Further heating of the magma chamber builds the pressure up and the magma bursts through the Earth's crust. When magma erupts out of the earth's surface, it is called lava. Lava can be thick and slow moving or thin and fast moving.

Most volcano form a conical mountain structure after eruption. Volcano spews lava, steam, poisonous gases, ash etc from the top of the mountain. This forms a crater at the top of the mountain. Flowing lava cools down and solidifies on all sides of the mountain making the conical mountain structure bigger.

Volcanoes are not unique to the Earth only. They are found on other planets and their moons as well. The word ‘Volcano' is thought to come from Vulcano. Vulcano is a volcanic island in the Aeolian Islands of Italy. The study of volcanoes is called volcanology.
 
Question 7:
When are volcanoes made?

when two tectonic plates move away from each otherwhen there is sudden release of energy in the Earth's crust that creates seismic waves

when two tectonic plates move toward each otherwherever there is snow lying on ground of sufficient angle
 
Question 8:
Where is the magma formed?

inside the magma chamberon the Earth's surface

inside the sea surfaceinside the lava chamber
 
Question 9:
Which fact is NOT correct?

Volcanoes are found on other planets and their moons as well.Most volcano form a conical mountain structure after eruption.

Volcanoes are unique to the Earth only.Volcanoes spew lava, steam, poisonous gases and ash from the top of the mountain.
 
Question 10:
What is the study of volcanoes called?

VolcanographyEntomology

Volcano ScienceVolcanology
 
  Login to "Submit and Check Answers"
Sponsered Artist: Juhi at JuhiMusic.com   

Copyright © 2005 - 2012 myTestBook.com Inc. All rights reserved.
Contents of myTestBook.com can not be copied for another website or for any other kind of publication.