10 Science T3 Review

What unit of measurement is generally used to measure distances within our solar system?

• Kilometers (km)

• Miles (mi)

• Astronomical Units (AU)

• Light years

1 Astronomical Unit is equal to the average distance from _______________.

1 Astronomical Unit (AU) is equal to approximately ______ million kilometres.

• 1.5

• 2.6

• 0.9

• 1.7

A light year is a unit of measurement used outside of our solar system. The light year is equal to the distance __________________________.

• from the Sun to the edge of our Solar System.

• a beam of light travels in a single Earth year.

• from Burnside State High School to the moon.

• of how long it takes for light to travel from the Sun to Earth.

Light travels at approximately _________________ m/s.

Mathematical Equivalence

ON

a light year is equal to approximately _______ trillion kilometres.

• 4.8

• 11.7

• 9.5

• 3

Match the part of the sun with its description

• Visible surface of the sun that emits light

• Core

• Innermost layer of the sun where nuclear fusion occurs

• Photosphere

• Outermost layer of the sun's atmosphere, visible during a solar eclipse

• Corona

• Layer above the photosphere, known for its reddish color

• Chromosphere

Fill in the missing information on the diagram.

a

b

c

d

e

f

Photosphere

Core

Chromosphere

Convection Zone

Radiation Zone

Corona

Explain the difference between the terms Apparent and Absolute Magnitude.

Use the following scales to identify the star with the greatest Apparent Magnitude.