Basic of Science

How old are the atoms in your body?

• 10,000 years old
• 1 million years old
• 13.8 billion years old
• 100 years old

The water molecule is made up of how many atoms , name them?

• 3 atoms - 2 hydrogen atoms and 1 oxygen atom
• 5 atoms - 2 hydrogen atoms and 3 oxygen atoms
• 2 atoms - 1 hydrogen atom and 1 oxygen atom
• 4 atoms - 3 hydrogen atoms and 1 oxygen atom

Ice is solid but what will you do to turn it into liquid?

• Add salt to it
• Put it in the freezer
• Apply heat

• Blow cold air on it

Which of the following are an example of Liquid?

• Sand, rocks, soil
• Wood, metal, plastic
• Air, gas, steam
• Water, milk, juice

The force that keeps us on Earth is?

• wind
• magnetism
• gravity
• friction

Definition of Friction is?

• The force that increases motion between two surfaces in contact.
• The force that causes motion between two surfaces in contact.
• The force that opposes motion between two surfaces in contact.
• The force that has no effect on motion between two surfaces in contact.

Give common examples of wedge?

• Screwdriver, hammer, pliers
• Spoon, fork, ladle
• Knives, axes, chisel

• Saw, nail, drill

What is the speed of electricity?

• 299,792 kilometers per second

• 1,000,000 kilometers per hour
• 500 kilometers per second
• 10 miles per hour

Where do we use electricity?

• Outer space
• Underwater
• In the desert
• Homes, schools, offices, factories, etc.

Name a animal which produce electricity naturally?

• Lightning dog
• Electric cat
• Shock snake
• Electric eel