Earth and Life Science Lesson 1 and 2

What was the universe like before the Big Bang?

• A large planet

• A cold space

• A tiny, hot, and dense point

• A ball of stars

What tool helps scientists study the light from stars?

• Microscope

• Spectroscope

• Ruler

• Barometer

Which of the following is evidence of the Big Bang Theory?

• Sunlight

• Ocean tides

• Cosmic microwave background

• Moon phases

What does a spectroscope help us find?

• The size of a planet

• The sound of space

• What elements are in stars

• The speed of light

What is a singularity?

• A type of star

• A group of galaxies

• A point with no size and great density

• A type of telescope

How does a star's size change how long it lives?

• Bigger stars live longer

• All stars live the same

• Bigger stars live fast and die young; small stars live longer

• Smaller stars always explode

Who discovered that galaxies are moving apart?

• Albert Einstein

• Galileo Galilei

• Edwin Hubble

• Isaac Newton

What does the cosmic microwave background show us?

• The size of stars

• The after glow from the Big Bang

• How Earth was formed

• The light from the Moon

What is the most common gas in the universe?

• Oxygen

• Hydrogen

• Carbon dioxide

• Nitrogen

What is fusion in a star?

• When stars spin

• When stars break

• When atoms join together to make energy

• When planets crash