Astronomy Part 1B

"The whole universe was in a hot dense state, when nearly 14 billions years ago expansion started...." What is the hot dense area called?

• Black hole
• Neutron Star
• Ellipse
• Singularity

How many stars are in our solar system?

• 1
• 14 billion
• 250 million
• 250 billion

What would happen to the ellipse if the foci move closer together?

• becomes more eccentric
• becomes more like a circle
• doesn't change

How can we describe the shape of the orbit of the earth?

• cylinder
• perfect circle
• ellipse
• sphere

What element fuses together to form Helium?

• Oxygen
• Hydrogen
• Carbon
• Helium

What two variables determine the strength of gravity?

• mass and distance
• mass and density
• temperature and mass
• density and temperature

Which day is known as the Winter Solstice?

• August 21st
• November 23rd
• December 21st
• January 23rd

What is the tilt of Earth?

• 23 degrees
• 17 degrees
• 23.5 degrees
• 21 degrees

What is the eccentricity value of the Earth's orbit?

• 0
• 0.017
• 23.5
• 17

Which of the following is the longest day of the year?

• May 23rd
• August 27th
• September 21st
• June 21st