Inventions such as the alphabet, car, and electricity have helped make life easier by creating something new or finding a new use for something natural. Inventions happen when someone has a new idea and are later improved by others to be more modern. Many important inventions use electricity or help prevent and treat illness, while others aid communication and transportation by connecting people and allowing movement between places. Computers are a modern invention with various parts that are useful for tasks at home, school, and work.

1. Great inventions
Science UNIT 8 2nd grade

2. What is a discovery? What is an invention?
Finding a use for something that already exist in nature , like oil or tomatoes, is
a discovery.Creating something new, like the alphabet or the car , is an
invention. Discoveries and inventions help people because they make life easier.
Fire
Salt
Hairdryer
Mobile phone
Spoon

3. How do inventions happen?
An invention happens when someone has a new idea. Later, people
improve these inventions and make them more modern.

4. Which inventions use electricity?
Every day we use machines and tools that make our lives easier. Many machines
use electricity, like the fridge or the radio. Electricity is a form of energy. It was a
great discovery.

5. Which inventions and discoveries are important for our health?
Some inventions and discoveries are very important because they help to
prevent or treat illnesses.

6. Which inventions help us to communicate or to move
from place to place ?
Many inventions help us to communicate with other people or to move
from place to place. Pleople improve these inventions all the time and
make them more modern.

7. What can we use a computer for?
We can use computers for lots of things we need to do at home, at school and
at work. A computer has different parts:
C.P.U.
Printer
Screen
Speakers
Keyboard Mouse
Webcam