General Science Class 7

The coolest stars are the red stars and their temperature is around:

1. 2000°C
2. 3000°C
3. 4000°C
4. 5000°C

In which color the coolest stars are appeared?

1. Blue
2. Yellow
3. Red
4. White

The Sun has temperature of around 6,000 °C and glows:

1. Red
2. Blue
3. Green
4. Orange/Yellow

The Sun has temperature of around:

1. 3000 °C
2. 6000 °C
3. 4000 °C
4. 5000 °C

The hottest stars are the blue stars and their temperature is around:

1. 25000°C
2. 20000°C
3. 15000°C
4. 10000°C

Which one of the following stars are hotter than red and orange stars?

1. Green
2. Dark
3. Blue
4. Yellow

What causes the stars in space to absorb and scatter starlight that resulting in a reduction in their brightness?

1. Planets and Moons
2. Asteroids and Comets
3. Black Holes and Neutron Stars
4. Dust and Gas

The earth is part of a galaxy called?

1. Andromeda Galaxy
2. Triangulum Galaxy
3. Milky Way Galaxy
4. Pinwheel Galaxy

Our galaxy is _____ in shape.

1. Irregular
2. Spiral
3. Elliptical
4. Circular

How many light years the earth and sun are away from the center of Milky Way galaxy?

1. 27000
2. 23000
3. 20000
4. 25000