Atlas Science Review

Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below.What is the outcome variable (dependent variable) in this experiment?

• the number of bubbles produced

• the type of plant placed in the beaker

• the distance of the light source from the plant

• the amount of time the bubbles were counted

Tags

NGSS.MS-LS1-6

Ernest Rutherford developed an experiment that showed protons can pass through gold atoms untouched and/or un-deflected. Sometimes the protons were deflected by something, but this did not happen too often. Most of the atoms pass straight through. His experiment changed the way scientists viewed the structure of an atom. What conclusion did Rutherford draw from his experiment?

• The gold atoms are not close to each other

• The subatomic particles in the gold atoms are very close together

• Inside of the gold atom consists of empty spaces

• There can be no conclusion drawn from this observation

A student wants to know if the weight of a cart affects its speed at the bottom of a ramp. He can change the weight of the cart by adding different numbers of balls, and he can change the height of the ramp by using different numbers of blocks. Which set of tests should he compare (set A, B, C, or D)?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

An object at rest will stay at rest and an object in motion will remain in motion unless acted upon by an unbalanced force.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

The number at the top of each square on the periodic table is the ...

• atomic number

• atomic mass

• Chemical Symbol

• Element Name

Tags

NGSS.MS-PS1-1

When nitrogen is returned to the soil when dead plants decompose, the interaction is between which two spheres?

•  Hydrosphere and geosphere

•  Cryosphere and geosphere

•  Biosphere and Geosphere

•  Biosphere and atmosphere

Tags

NGSS.MS-LS2-3

The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach.  Which arrow shows radiation?

• 1

• 2

• 3

• 4

Slate is a metamorphic rock that forms from the sedimentary rock, shale. Which of the following is needed for slate to form from shale?

• Weathering

• Erosion and deposition

• Melting and cooling

• Heat and pressure

Which of the following would be a cause of chemical weathering?

•  Acid rain

• Freezing and thawing

• Abrasion

• Animal action

Tags

NGSS.MS-ESS2-2

Which of these is in order from oldest to most recent?

•  4,  3,  2,  5,  1

• 3,  2,  1,  4,  5

• 1,  2,  3,  4,  5

• 3,  4,  1,  5,  2

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS1-4