6Sci_Unit1_Preassessment

They are very large and made of gases.

They are very large and made of ice.

They are also rocky and small.

They are small and made of ice.

Mercury and Earth

Uranus and Neptune

Earth and Venus

Saturn and Jupiter

They are planets in our solar system.

They have rings.

They spin slowly.

They revolve around the sun.

It can tell us what the moon is made of.

It tells us how it was formed.

It tells us how hot it is there.

It helps us see surface features.

There are no living organisms in Martian soil.

Mars is slightly oval in shape.

Mars is about one-fourth the size of Earth.

The gravity on Mars is much less than on Earth.

The distances are very great; it is dangerous and expensive.

We do not have a destination to visit that we know will support life.

We cannot take the air or food we need into space.

It is impossible to escape the sun’s or Earth’s gravity.

gravity

air currents

speed

string

Earth

moon

Jupiter

Sun

a star or sun

each other

a galaxy

a moon

many moons

Earth’s moon

the inner planets

the sun

magnifying glass

telescope

binoculars

your eye

The Earth’s tilt causes the longest days with the least intense sunlight.

The Earth’s tilt causes the longest days with the most intense sunlight.

The Earth’s tilt causes the shortest days with the most intense sunlight.

The Earth’s tilt causes the shortest days with the least intense sunlight.

It has aided in the discovery of life outside the solar system.

It has aided in the discovery of planets inside the solar system.

It has aided in the discovery of planets outside the solar system.

It has aided in the discovery of life inside the solar system.

The distance prevents solar flares from reaching Earth’s atmosphere.

The distance causes the different seasons on Earth.

The distance contributes to Earth’s ability to support life.

The distance is the source of Earth’s magnetic field.

The tide is larger than normal because the gravitational forces of the sun and moon pull in opposite directions.

The tide is larger than normal because the gravitational forces of the sun and moon pull in the same direction.

The tide is smaller than normal because the gravitational forces of the sun and moon pull in the same direction.

The tide is smaller than normal because the gravitational forces of the sun and moon pull in opposite directions.