in this ppt it has been clearly discussed the first four inner planets Mercury and Venus.

1. What are the inner
planets?

2. The Inner plants
The four planets that are close to the Sun are
known as the inner plants.
These planets are Mercury, Venus, Earth, and
Mars.
They are all small and rocky planets
Special satellites and space probes have
provided information about the planets

3. Mercury
Mercury is the planet closest to the Sun.
It is a small planet, a little bigger than the
earth’s Moon.
Mercury is covered with thousand of dents
The dents are shaped like bowls and called
Craters.

6. Crater
A large bowl-shaped
cavity in the ground
or surface of a planet
typically caused by an
explosion or the
impact of meteorite is
know as crater

7. Crater
Crater were made when meteorites
crashed into Mercury’s surface long ago.
A meteorite is a rock from the space that
has struck the surface of a planet or a
Moon.

8. Space probes
A space probe is a vehicle that carries
cameras and other tools for studying
different objects in the space,
 In 1974 scientists sent the Mariner 10
space probe to visit Mercury.

9. Too hot and too cold
Mercury has almost no atmosphere and it is
so close to the Sun so Mercury is scorching
hot during the day.
Day times temperature is four or five times
grater than the hottest place on the Earth.
But with no atmosphere to hold in heat,
Mercury is very cold at night.

10. Venus
Venus is the second planet from the Sun.
It is about the size of the Earth but Venus turns in
opposite direction.
Mercury is very hot and dry.
Unlike Mercury Venus has an atmosphere made of
thick, swirling clouds.
The clouds of Venus are burning hot and poisonous!

11. Venus
There are strong winds
and lightening.
The clouds are good
at reflecting the Sun’s
light so this makes
Venus one of the
brightest objects in
Earth’s night sky.

12. Earth
Earth is the third planet from the sun and
the largest rocky planet in the solar
system.
Earth is the only planet that has liquid
that has liquid water on its surface.
Earth is wrapped in layers of gas that is
150 kilometer thick.

13. Earth
This layer of gas or atmosphere, makes
life possible on Earth. It also filters some
of Sun’s harmful rays.
It contains oxygen, nitrogen, carbon
dioxide, and water vapor.
Earth is the only planet that is know as to
support life .

14. The Moon
Moor are satellite of planet.
A satellite is an object that orbit another object in
the space such as the Moon revolves around the
Earth.
Earth has on large Moon. The diameter of the
Moon is about one-fourth the diameter of the
Earth.
It has many craters that formed when meteorites
crashed onto its surface.

15. Exploring the Moon
Space exploration started in 1957 when the former
soviet Union launched Sputnik, the first arterial
satellite.
The Soviet Union sent the first space probes to the
Moon in 1959.
In 1961, Yuri Gagarin, a Soviet cosmonaut, became
the first person to travel in space.
His journey on Vostok I circled Earth in less than 2
hours.

16. Exploring the Moon
In 1969 Neil Armstrong and Buzz Aldrin
were the first people to step on the
Moon’s surface.
The Moon has no atmosphere to create
wind or rain, so their footprints will
remain for years to com

17. Mars
Mars is the fourth planet from the Sun.
The rocks and soil that cover much of the
Mars contain iron oxide. This mineral is
radish-brown in color. It is the same mineral
that makes up rust.
Mars has too Moons. Deimos and Phobos.
Phobos is very close to Mars.

18. The atmosphere on Mars does not have enough
oxygen to support life.
Winds on the Mars cause dust storms that sometimes
cover the entire planet.
Mars has polar caps that grow in the winter and shrink
in the Summer.
Mars has many volcanoes on it surface.
It also has a canyon that is bigger than earth’s Grand
canyon. This canyon is more than 4000 kilometer long.
Earth’s Grand canyon in Arizona is 446 km long.

19. Space probes on Mars
Several space probes has successfully landed on Mars. The
first one Viking I, touched down on Mars in 1976.
In 1997, a 30 cm tall box-shaped robot explored part of
Mars. The robot was named sojourner has explore Mars.
Then in January 2004, the twin robot spirit and opportunity
landed on Mars. Both collected data and send it to Earth.
Scientists hope that the data will help them learn about
materials that make up mars.