Science

Biology

100

How old is the planet Earth?

4.5 billion years old

200

What is DNA?

DNA is the chemical substance that our genetic makeup consists of.

Physics

100

How do you calculate speed?

Distance/Time=Speed

200

What is gravity?

The force that pulls objects toward each other.

300

What unit are forces measured?

Forces are measured in a unit called newton.

Chemistry

100

What is covalent bonding?

Covalent bonding is when atoms share electrons.

Acids

100

what color does a strong acid have?

Red

200

Give 2 examples of an strong base?

• Potassium hydroxide 
• Sodium hydroxide 
• Barium hydroxide  
• Calcium hydroxide 
• Lithium hydroxide