Social Studies Unit 6 Lesson 5: Understanding the Universe Solved Exercise Page 98, 99 and 100

Social Studies Unit 6 

Lesson 5: Understanding the Universe

Exercise 1: What is a light year?

A light year is a unit of measurement used to measure the distance that light takes to travel in one year from one star to the other.

Exercise 3: What is a star? Name an important one. What makes it important?

A star is a self-luminous body in space / Polaris or North Star, and it is important for navigation.

Exercise I: Use the words in the box to fill in the blanks.
1. The gaseous mixture that covers Earth’s surface is called atmosphere.
2. When the atmosphere changes within 24 hours or less, this means that the weather is changing.
3. A climate characterizes the general atmosphere of a place or season over a long period of time.
4. The plants that are found in a specific place are called vegetation.
5. A group of stars with a known pattern is called constellation.
6. An instrument that is used to make distant objects appear nearer is called a telescope.
7. The period of time which Earth takes to complete a full round aroud the sun is called a solar year.
8. The lunar year is based on the moon’s cycles and phases.

Exercise II: Circle the best choice.

1. Temperature is usually measured by the _____________________.
a. atmospheric pressure
b. thermometer
c. anemometer

2. The climate that is generally characterized by its year-round warm temperature, humidity, and abundant rainfall is the _____________________.
a. wet- dry tropical climate
b. Mediterranean climate
c. tropical moist climate

3. The first scientist to invent and assemble the first telescope is_____________________.
a. Hans Lippershey of Holland
b. Galileo Galilee
c. Sir Isaac Newton

4. Where do starts revolve?
a. around the moon
b. around themselves
c. around Earth

Comments

Post a Comment

Popular posts from this blog

Revision work for chemistry Grade-8 2021.

Revision work for chemistry Grade-8  2021.  Chose the best. 1.     In a brewery the Fermentation is carried out          in ------------------- vats. A.    Small B.    Large C.    Medium D.    All 2.     Drugs are substances which affect          the ----------------------- in some way. A.    Plastic B.    Rocks C.    Body D.    None of them 3.     I n the 1950s a new drug called Paracetamol was           introduced. A.    Paracetamol B.    Placebo C.    Emulsion D.    Fermentation 4.     An Emulsion is an example of a ---------------- . A.    Emulsion B.    Fermentation C.    Placebo D.    Colloidal 5.     Detergents are ------------------ agents. A.   ...
Read more

Answer Key for Grade-6 Social Studies 2nd final Term Examination 2021

Answer Key for Grade-6  Social Studies    2nd final Term Examination   2021 Page 85 Exercise 1:  What is the difference between climate and weather? Explain. The weather changes within a short time (24 hours or less), and it changes from day to day. While the climate is constant over a long period (it does not change from one day to another), and it characterizes the general atmosphere of a place over a long period. Exercise 2:  Name the four elements that affect the change of climate from one place to another or from one season to the other. 1. Temperature (heat) 2. Atmospheric pressure 3. Precipitation 4. Wind Exercise 3:  Write “true” or “false”. 1. Wind moves all the time above the surface of the Earth.  T 2. A barometer measures temperature.  F 3. Temperature refers to heat and the sun might be a possible source of heat.  T 4. When I say it’s going to be cloudy today, the I am referring to the weather.  T Page 100 Exercise...
Read more

Define Cracking.

Image
Define Cracking. Cracking : The process by which heavy hydrocarbon molecules are broken up into lighter molecules. Cracking is the name given to breaking up large hydrocarbon molecules into smaller and more useful bits. This is achieved by using pressures ,  temperatures  and catalyst.
Read more