Middle School Science Review

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine

• deoxyribose sugar and a hydrogen bond

• deoxyribose sugar and the nucleus

• deoxyribose sugar and phosphate

X outlines a(n) ___________.

• amino acid

• nitrogen base 

• nucleotide

• nitrogen base pair

Tags

NGSS.HS-LS1-6

Identify #2.

• nitrogen base

• phosphate group

• deoxyribose sugar

• nucleotide

Tags

NGSS.HS-LS1-1

If a DNA molecule consists of 29% Guanine, how much cytosine will it contain?

• 29%

• 58%

• 21%

• I have no idea.

A region in space that is so dense that nothing, even light energy, can escape its gravitational field is known as a —

• nebula

• black hole

• pulsar

• black dwarf

Tags

NGSS.HS-PS2-4

Which statement below best explains why we can only see one side of the moon from the Earth?

• The rotational period and the revolutionary period of the moon are the same length.

• The axis of the Earth prevents us from seeing the other side of the moon.

• People in the Northern Hemisphere see one side of the moon while people in the Southern Hemisphere see the other side.

• The other side of the moon is visible during the new moon phase.

Tags

NGSS.MS-ESS1-1

Electromagnetic waves are characterized by their frequency and wavelength. The smaller the wavelength of a wave, the higher the frequency and penetrating power the wave will have. Which of the waves would be the most concerning to a human due to the wave's amount of energy and penetrating ability?

• Gamma Rays

• Ultraviolet

• Microwave

• Radio waves

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

The Milky Way galaxy is a spiral galaxy that contains our sun and solar system. A representation of the Milky Way is shown in the image. Where in this diagram would our sun most likely be found?

• The sun would be found in the middle of the galaxy.

• The sun would be found at the beginning of the spiral arm, near the middle of the galaxy.

• The sun would be found in the middle of a spiral arm.

• The sun would be found on the end of a spiral arm.

Tags

NGSS.MS-ESS1-2

The alignment of the Moon and Sun has an effect on Earth’s ocean tides. What force causes this effect?

• sun spots

• magnetic fields

• gravity

• air resistance

Tags

NGSS.MS-ESS1-1

The diagram above represents the phases of the moon. Position 1 represents the new moon. Positions 2 through 8 represent the phases of the moon that follow.

Which phase does position 6 represent?

• Full moon

• Waning crescent

• Waning gibbous

• Quarter moon

Tags

NGSS.MS-ESS1-1