Inventions arise from discoveries or are entirely new creations that improve lives. Discoveries apply existing natural phenomena while inventions generate novel devices or processes. Many modern inventions rely on electricity or facilitate communication, transportation, health, and work/education through ongoing improvements. Computers in particular contain various components and can perform multiple tasks at home, school, and professionally.

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