Test Review - Solar System and Habitable Zone

Essential Question-
What are the characteristics that make a planet
habitable for humans? What conditions need to
exist in order for life to survive?

Earth is unique in the Solar System as being the
only planet which is able to support life in all its
forms. There are many reasons why this happens.

Some characteristics that make a planet
habitable for humans are oxygen, water,
sunlight, protective atmosphere, gravity, and
temperature.

Multiple Choice

Earth is unique - it is the only planet in our solar system known to support life. Earth is considered to be in the ___________ zone

• Big Bad Wolf

• Snow White

• Cinderella

• Goldilocks

Oxygen is a key ingredient to life.
All human beings breathe oxygen.

Earth has a
breathable
atmosphere.

Oxygen is constantly put
into the atmosphere by
plants and trees.

Multiple Choice

Oxygen is a key ingredient for life. Humans can only live for about ______ minutes without oxygen.

• 60

• 2

• 4

• 6

Multiple Select

oxygen is continuously put back into the atmosphere by ...

• plants

• trees

• sheep

• humans

Multiple Choice

Earth has a ________ atmosphere.

(Check at Box 2)

• tasty

• breathable

• helpful

• dig gable

Water on Earth can be found anywhere, in its
three states. It can be frozen, taking the form
of ice. It can be liquid, seen in
seas and oceans and lakes.
No other planet has liquid water.

Water is essential for life –
our bodies are 50-70% water.

Water can transport nutrients, absorb heat
and regulate body temperature.

Dropdown

Earth is the only planet with ​​ water in the form of

Select answer

Sunlight is very important. Heat, light, and energy all
come from the sun. Trees and plants need the Sun to

produce oxygen through a process called

photosynthesis. We also need sunlight to grow our

food - crops and animals.

Multiple Choice

Trees and plants need the sun for a process called

• photosynthesis

• carbon cycle

• geology

• digestion

Multiple Choice

Heat, light and energy all come from the

• sun

• moon

• Venus

• Mercury

The ozone is

the layer
around the
earth that
screens out

harmful
radiation.

The

protective
atmosphere
around the

earth is
needed to

for the

survival of

humans.

Reason 4: Protective
Atmosphere

Multiple Choice

The protective layer around the earth is called ...

• ozone layer

• geosphere

• biosphere

• hydrosphere

Reason Five: The Sun

If there was no Sun, there would be no life on

Earth. Earth would not exist.

Because of Earth's ideal distance from the
Sun, it receives the perfect amount of heat

and light to support life. Earth is the only

planet with the right temperaturerange for

there to be liquid water

Temperatu

re

Multiple Choice

An object in our solar system is described as:

1. having the most mass

2. made of gas

3. has 8 natural satellites

   What is this object?

• Sun

• Moon

• Earth

• Jupiter

Multiple Choice

What force governs motion in our solar system?

• friction

• air resistance

• kinetic energy

• gravity

Multiple Select

Which of the following are the most important that makes Earth’s temperature habitable ("Just Right")?

Select TWO correct answers.

• Distance to the moon

• Gas composition

• Proximity to the Sun

• Amount of water

• Revolution of the Earth around the Sun

Multiple Select

Which of the following statements are true about objects in our solar system? Select

THREE that apply.

• The inner planets are large, gas giants

• Moons are natural satellites that orbit around most planets

• The planets that orbit around the sun in order are Mercury, Venus Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• All planets, asteroids and comets are influenced by the Sun

Multiple Choice

Which of the following characteristics of planet Earth is the MOST essential for living organisms?

• Earth has enough available water

• Earth has just one orbiting moon

• Earth orbits the Sun every 365 days

• Earth rotates on it axis once every 24 hours

Multiple Choice

Which of the following statesments is true about the gravitational pull of the solar system?

• Tje solar system is held together by the gravitational attraction between all objects within it

• The only objects in the solar system not affected by the Sun's gravitational attraction are comets

• Mercury exerts the same amount of gravitational force on earth as Neptune does

• Jupiter is the largest planet in the solar system but has the least gravitational attraction because it is furthest from the sun

Gravity is what
holds us down to

the planet,

without it we
would fly out

into space.

Reason Six:

Too little
gravity
results in
weaker
bones and
muscles.

Too much gravity
tires muscles,
breaks bones and
would require a
lot more energy
to move.

Multiple Choice

Gravity was first described by..

• Sir Isaac Newton

• Sir Gregory John

• King George I

• Galileo

Multiple Choice

The amount of matter in an abject (sometime called weight) Is correctly known as

• mass

• mercury

• pickles

• gravity

Multiple Choice

The force of attraction between 2 objects that have mass is

• nuclear force
• gravitational force
• magnetic force
• electrical force

Multiple Choice

Everything (that has mass) has gravity

• Only large objects have gravity
• Gravity is only present on Earth
• Mass does not affect gravity
• True

Multiple Choice

Planets stay in a curved orbit around the sun because

• gravitational force and inertia
• magnetic fields and solar winds
• planetary rotation and solar flares
• chemical reactions and atmospheric pressure

Multiple Choice

Lucy jumps off a bridge during a bungee jump. She falls toward Earth because

• Earth has more gravity than her

• She has more gravity than Earth

Multiple Choice

The greater the _____ of the object, the more gravity it has

• mass

• distance

• height

• width

Multiple Choice

The greater the _____ between the objects, the LESS gravity there is.

• distance
• shape
• size
• mass

Multiple Choice

Which 2 objects have the most gravity in our solar system?

• sun and jupiter

• mercury and pluto

• Venus and earth

• moon and stars

Multiple Choice

Gravity is what keeps are feet planted on ..

• Earth

• Mars

• Moon

• sky