Burke County Middle School Science Constructive Response
6th and 7th Grade Science

6th Grade Constructed Response

1. What are the three major classifications of rocks formed on Earth? Which one would you find fossils in and why would you find fossils in this rock. Explain how fossils form. (6.E.2.4)

Answer:
Metamorphic
Sedimentary
Igneous

You would find fossils in sedimentary rock

Layers of soil are laid down on dead animals or plants embalming them. The minerals replace the organic matter creating the fossil.

2. Describe how the revolution of the Earth around the sun affects the seasons. Give one example supporting your answer (6.E.1.1)

Answer:
Revolution is defined as the orbital path a celestial body follows around the sun, or other celestial body. AS the Earth is close to the sun, the sunrays are able to reach the Earth a short distance allowing the Earth to become warmer. When the Earth moves away from the sun, the rays do not reach the earth. The Earth at a persistent distance does not allow the Earth to warm causing a change in seasons.

3. Contrast the differences between lunar and solar eclipses and the affects they have on Earth. (6.E.1.1)

Answer:
Lunar—Earth’s shadow hides the moon; widely visible

Solar—Moon blocks the sun; visible to only certain areas of the Earth at a time. Less light available for a short period of time.

7th Grade Constructed Response

1. Explain how two brown eyed parents could give birth to a blue eyed child. B=brown and b=blue. Create a punnett square as part of your answer. (7.L.2.2)

Answer: Both of the parents would be heterozygous for brown eyes. This means that they would be Bb. This means that they each carry a recessive allele for blue eyes. There is a 25% chance that this couple could produce a child with blue eyes. To prove this, here is a