Ohio Space Science

OST 5th Grade Practice

Space/Earth Science

Poll

What was your favorite topic during the Earth/Space Section you just finished ?

• Planets

• Sun/Earth/Moon Relationships

• Stars

In a day Earth rotates once on its axis,

which is tilted at a 23.5° angle.

Earth’s rotation causes the apparent position of the sun, moon and stars to move in the sky

from east to west.

Multiple Choice

Two students use a ball and flashlight to represent Earth and the Sun.

Which statement explains why point X should be the North Pole instead of point Y?

• Earth's axis is tilted.

• Earth orbits the moon.

• Earth rotates on it's axis.

• Earth is pulled by the moon.

​The distance from the sun, size, composition and movement of each planet are unique.​

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Planets revolve around the sun in

elliptical orbits.

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Draw

The diagram shows three objects in the solar system. The dashed lines Show the orbits of some of the these objects.

Write in a label for each box.

M - Moon P- Planet S- Star

Draw

Circle the globe showing Summer in the Northern Hemisphere where we live.

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Comets, asteroids, dwarf planets and meteoroids also orbit the sun.

Asteroids are rocky bodies that orbit the sun in nearly circular orbits but are too small to be classified as planets.

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Comets are a mixture of ices (e.g., water, methane, carbon monoxide, carbon dioxide, ammonia) and dust, and have highly elliptical orbits.

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A meteor appears when a particle or chunk of metallic or stony m​atter called a meteoroid enters Earth’s atmosphere from outer space. Meteors that pass through the atmosphere and impact Earth’s surface are called meteorites.

Multiple Choice

A scientist studies an object that is in outer space and is made of ice and gas. It has a very large orbit around the sun. When it gets closer to the sun, the ice melts and the gases burn.

Which type of celestial body is he studying?

• asteroid

• comet

• meteoroid

• moon

The Sun appears to be the largest star in the sky because it is the closest star to Earth.

Some stars are larger than the Sun and some stars are smaller than the sun.

There are many other stars of different sizes in the universe. Because they are so far away, they do not appear as large as the Sun.

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Stars appear in patterns called constellations, which can be used for navigation.

Draw

A student looks at stars through a telescope. Each star is the same size as the Sun.

Circle the star that is farthest from Earth.

Draw

A student is creating a table describing planets in our solar system. Using the information in the table, draw lines matching the labels to the blanks in the table. labels into the blank

Poll

Do you feel ready to take the OST for Science?

• Absolutely!

• No, not really.

• Sort of.

• Yeah, I think so.