telescope Earth

stars

What is our topic for today?

Identify the kind of stars according to their color

What are the kind of stars according to their color?

What are the standards in group work

activity?

Open your textbook “ Science and Health: Into The Future ”. Open

your book to pp. 251-253.

What are the colors of stars. Give examples.

Pupils to work in pairs. One will ask questions about our topic and the other one will answer .

Group of Stars According to Color Stars are made of very hot gases, mostly hydrogen and helium provides fuel that produces the light energy of the star.1. Red stars- are the coolest star Ex. Betelguese and Antares (3000) degrees Celsius2. Orange stars- are stars cooler than red stars Ex. Arcturus ( 4,200 degrees Celsius)3. Yellow stars- are hot stars Ex. Sun ( 6,000 degrees Celsius) and Procyon 4. White stars- are hotter stars compared to yellow star. Ex. Sirius and Vega (11,000 degrees Celsius)5. Bluish- white stars- are the hottest stars. Ex. Rigel (20,000 degrees Celsius)

1.Magnitude- is the degree of brightness of a star.2. Stars seem to twinkle because their light passes through different layers of air surrounding the Earth.3. The distance of stars from the Earth are measured in light years.

1. Apparent Magnitude- the apparent brightness of stars due to their size and distance from the Earth.2. Light Years- refers to the distance of the stars from the Earth.

supergiant star giant star dwarf star

Identify the kind of star being described

1.Larger than the sun.2.Smaller than the sun.3.Smaller than supergiants but

bigger than the Sun.4.NGC 2440 is the example.5.Antares is _______

Research on the picture or images of

the colors of star.Label them properly.