Q1.2A THEORIES, SCIENTISTS (TH)

A scientific theory...

• is based on lots of evidence
• is not valid
• is not reliable
• has not been tested many times

Match the scientific theory to the correct definition:
The Big Bang Theory

• Animals and plants change gradually over a long period of time through a process of natural selection
• The planets move around the sun, not the other way around
• An explosion of heat that occurred 15 billion years ago and from which the Universe originated
• The force which makes two objects move towards each other, most commonly when an object falls to the ground

Which of the following is not true of a scientific theory ?

• a theory can be based off a model or an explanation

• you do not need evidence to form a theory

• a theory is based on results

Theories can change when....

• we discover new information and new technology

• whenever the scientist decides

• the decade changes

• cows jump over the moon

What theory is closely associated with the big bang theory?

• The heliocentric model

• The geocentric model

• The shrinking universe

• The expanding universe

What does helio mean?

• earth

• jupiter

• sun

• pluto

What does geo mean?

• earth

• sun

• pluto

• jupiter

What scientist discovered the Geocentric Model?

• Ptolemy

• Copernicus

• Galileo

• Plato

What scientist discovered the Heliocentric Model?

• Copernicus

• Galileo

• Ptolemy

• Plato

Where is Earth positioned in the Geocentric model

• in the center

• on the outside

• to the right

• to the left