Science Iowa Test Practice

Why do day and night occur on Earth? A diagram is provided to help.

• Because the Earth rotates

• Because the Earth rotates on its axis so the area in light is changing

• Half the Earth is in daylight and the other half is in darkness

• The Earth is always half sunlit, half in shadow, and rotates on its axis so the area in light is always changing

Tags

NGSS.MS-ESS1-1

How long does it take Earth to revolve around the sun?

• 366 days

• 30 days

• 24 hours

• 365  1/4 days

Tags

NGSS.MS-ESS1-1

Which is NOT a factor that explains seasons on Earth?

• Earth revolves around the Sun

• Earth gets closer to the Sun in summer and farther from the Sun in winter

• Earth's axis points to the North Star

• The Sun's rays are more or less concentrated depending on the solar angle

Tags

NGSS.MS-ESS1-1

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 get longer

• The Equator would burn up and the poles would freeze

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NGSS.MS-ESS1-1

What is the term for the movement of particles from an area of higher concentration to an area of lower concentration?

• Osmosis

• Diffusion

• Active transport

• Endocytosis

What is the primary function of the chloroplasts in plant cells?

• To break down sugar molecules to release energy

• To store water and nutrients

• To capture light energy and convert it into chemical energy

• To control the entry and exit of substances in and out of the cell

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

Which of the following is NOT a renewable resource?

• Solar energy

• Wind energy

• Coal

• Hydroelectric power

What is the term for the amount of matter in an object?

• Weight

• Density

• Mass

• Volume

Which of the following is a chemical change?

• Dissolving salt in water

• Boiling water

• Burning wood

• Melting ice

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of symbiotic relationship benefits one organism without harming the other?

• Mutualism

• Commensalism

• Parasitism

• Predation