Friday, March 9, 2019. Day 3


Grade 8 Agenda:


Closed notes quiz on unit vocabulary on Tuesday.

Flash cards due Monday

sexual reproduction egg sperm fertilization

zygote haploid diploid homologous chromosomes


Do Now:

Open your notebook and turn to your vocabulary notes on Sexual Reproduction, Diploid cells and Haploid cells

Prepare to take the Open Notes Quiz when instructed.


Review your Mitosis quiz results - released and emailed.

Chapter Content Outline - Diploid and Haploid Cells

  1. Organisms that reproduce sexually form two types of cells.

    • sex cell

    • body cells

  2. Body cells have pairs of chromosomes

    • diploid cells

  3. Chromosomes are in pairs because individuals receive similar chromosomes from each parent

    • similar means each has genes for the same trait arranged in the same way on the chromosome

    • homologous chromosomes

    • because they come from different parents they are similar but not identical

    • ex. both might have an eye color genes, but Mom’s might be blue and Dad’s might be brown

  4. All 23 human chromosomes are in homologous pairs

    • humans have 23 pairs of chromosomes (which equals 46)

    • Having the incorrect number of chromosomes leads to a chromosomal abnormality

    • 3 copies of chromosome 21 causes Down Syndrome

  5. Other organisms have different numbers

  6. Sex cells are different from body cells

    • sex cells have half the number of chromosomes

    • only one chromosome from each pair - 23 single chromosomes

    • haploid cells

  7. sex cells are produced by meiosis

Sexually reproducing organisms have pairs of similar chromosomes - pairs because one is inherited from each parent.

Sexually reproducing organisms have pairs of similar chromosomes - pairs because one is inherited from each parent.

Mitosis Quiz Results review


Conference and study Time

Grade 7 Agenda:

Awards Schedule

  • 12:35 - 1:05 Period 5

  • 1:05 - 1:35 Period 6

  • 1:35 - 2:05 Period 7

  • 2:05 - 2:10 pack up and transition to cafeteria


No Homework

Do Now:

Please get out:


Review Launch Lab


SLANT: Kinetic and Potential Energy

  1. energy is the ability to cause change

    • energy is measured in a unit called the joule

  2. kinetic energy is energy due to motion.

    • It is affected by speed and mass

    • as speed increases so does kinetic energy

    • as mass increases so does kinetic energy

    • examples…

  3. Potential energy is energy that is stored due to interactions between objects or particles.

    • Gravitational potential energy: energy stored by the attraction between two object’s due to gravity

    • depends upon weight and height

    • weight is mass x gravitational acceleration

    • PE = m ∙ g ∙ h

    • examples…

  4. Elastic potential energy: energy stored in objects that are compressed or stretched

    • rubber band

  5. chemical potential energy: energy stored in chemical bonds between atoms

    • fuels like gasoline and wood

    • food