Science Spring Benchmark Review

Matter and Energy

100

This subatomic particle has a negative charge and is found on the outside of the atom's nucleus

electron

200

good conductors of electricity, malleable, ductile, shiny/lustruous

metals

300

Which pair of elements has reactivity that is similar to Bromine, Br?

A) Selenium, Se and Arsenic, As 

B) Fluorine, F, and iodine, I

C) Fluorine, F, and argon, Ar

D) Sulfur, S, and argon, Ar

B

400

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G

500

Atoms of which two elements have a combined total of 23 protons?

A Sodium, Na, and magnesium, Mg

B Boron, B, and carbon, 

C C Copper, Cu, and zinc, Zn

D None of these

A

Matter and Energy and Forces

100

Bubbles, color change, odor, precipitate forms are evidence that a ________ change has happened

CHEMICAL

200

5H₂O has how many molecules

5

300

A car has traveled 100 meters in 7 seconds. What is the car's average speed to the nearest tenth's? 

14.3 m/s

400

2C₄H₃O has _____ total atoms

16

500

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Energy Transformation

H

Force and Motion

100

According to Newton's second law we use this equation to calculate an objects force

F=ma

200

An object at rest has no forces acting on it.

TRUE/FALSE

FALSE 

it has balanced forces acting on it

300

A student is moving a box to the right with 50 N while the other student is pushing the box to the right with 50 N. 

Will the box move?

(If yes, in which direction)

YES, TO THE RIGHT

400

A student pushes a 35 kilogram bookshelf across a smooth floor with a net force of 68 N.

What is the approximate acceleration of the bookshelf? (to the hundredth's place)

1.94 m/s²

500

The net force on a vehicle that is accelerating at a rate of 1.5 m/s2 is 1,800 newtons. What is the mass of the vehicle to the nearest kilogram? 

1200 kg

Organisms and Environment

100

flowers, trees, birds, skunks, squirrels are all ...

biotic factors

200

The more diverse an ecosystem is, the less sustainable it it. 

FALSE 

more biodiversity=more sustainability

300

Mosses and lichens are known as the __________ of ecological succession

pioneer species

400

Type of relationship where one benefits and the other does not benefit or is harmed

commensalism

500

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G

Pre-8th Grade

100

The formula for density

d=m/v

200

This organ system is responsible for providing the body with oxygen

The circulatory system

300

The process of photosynthesis occurs in this organelle of the plant's cells. 

chloroplast

400

The producers start with 100 kilocalories of energy, how much energy will the secondary consumers receive? 

1 kilocalorie

500

A student measures the mass and volume of a small cube made of an unknown metal. The mass of the cube is 20.0 g, and the volume of the cube is 4.3 cm³. 

What is the cube's density. (to the nearest 100th's

4.65 g/cm³