Middle School Science Review 4

About how long does it take the Moon to make one complete cycle around the earth?

• 24 hours
• 7 days
• 365 days
• 28 days

When the Northern Hemisphere of Earth is tilting away from the Sun, What season is the Southern Hemisphere experiencing?

• Summer
• Winter
• Spring
• Fall

What would be the result if the Earth's axis was not tilted but straight up and down?

• Nothing would change
• There would be no seasons
• Days would always be longer
• The equator would freeze and the poles would be hot

Which of the following statements is most accurate about the movement of Earth and the Sun?

• The Sun revolves around the Earth
• The Earth rotates around the Sun
• The Earth revolves around the Sun
• The Earth rotates while it revolves around the Sun 

During sea-floor spreading at divergent boundaries, magma rises from the mantle and erupts _____________.

• along the edges of all the continents
• along mid ocean ridges
• in deep ocean trenches
• at the north and south poles

Most geologists think that the movement of Earth's plates is caused by ______.

• conduction
• earthquakes
• convection currents in the mantle
• Earth's magnetic field.

Which method of investigation would be best for answering the question, "At what time do the squirrels in White Bear like to eat?" 

• controlled experiment
• build a model
• field study
• review of research

Which method of investigation would be best for answering the question, "How does the width of my bike tire affect the top speed?"

• controlled experiment
• build a model
• field study
• review of research

For the experiment, "How does the color of light affect plant height?", the amount of water each plant is given would be a _________ variable.

• changed
• measured
• controlled
• uncontrolled

For the experiment, "How does the color of light affect plant height?", the color of light that each plant is given would be a _________ variable.

• changed
• measured
• controlled
• uncontrolled