5th - Science Unit 8 Lesson 1 Flashcards
If the sun were a hollow ball,how many Earth’s could fit inside it?
1 million
Is a object that produces it’s own thermal and light energy?
Star
The mass of the Sun can be calculated if we know what two things?
- How long it takes a planet to make one trip around the Sun.
- The distance between the planet and the Sun.
The mass of the Sun makes up 99.8 percent of all the mass where?
The solar system
What can we calculate if we know how long it takes a planet to make one trip around the Sun and the distance between the planet and the Sun?
The mass of the Sun
What two very light gases is the Sun mostly made up of?
Hydrogen and Helium
What looks like a red circle around the Sun, when it is visible?
Solar flares
Is a burst of heat and energy that stretches from the surface of the Sun into space?
Solar flare
What are dark spots that appear on the surface of the Sun?
Sunspots
Is a pattern formed by a group of stars in the night sky?
Constellation
A constellation is a what formed by a group of stats in the night sky?
Pattern
What can always be found directly north of your location?
Polaris, or the Northern Star
Who first identified many of the constellations we know today?
Ancient Greek and Roman astronomers
What is dependent upon how much light if gives off and it’s distance from the Earth?
A star’s brightness, or magnitude
What measures how bright a star really is?
Absolute magnitude