Science 6 Final Review 2023

There is less gravity on Mars compared to Earth.  Therefore, on Mars a person would have less ________.

• weight

• mass

• volume

• mass and weight

A car travels a distance of 98.0 meters in 10 seconds. What is the speed of the car during this 10 second interval?

• 98.0m/sec

• 9.8 sec

• 9.8m/sec

• 4.9m/sec

Answer explanation

speed = distance/time

Look at the diagram to the left.

This would be classified as a(n)_______

• atom

• molecule

• element

• compound

Tags

NGSS.MS-PS1-1

Calculate the density of an object that has a mass of 100g and a volume 

of 5 cm3.

• 200.0g/cm3

• 20.0g/cm3

• 20.0g

• .05g/cm3

Answer explanation

density = mass/volume

d=m/v

The mass of 800 mL of water is  _______ grams.

• 8000

• 800

• 8

• 80

 A place or object used for comparison to determine if something is in motion is  called _________________.

• stationary object

• starting point

• reference point

• kinetic energy

Answer explanation

The Earth is the most common reference point!

 The wheels and gears of a machine are greased in order to decrease _____.

 

• friction

• potential energy

• efficiency

• output

 A pile of books inside a car moves forward as the car comes to a quick stop.  This is an  example of _______________________.

•   Newton’s Law of Gravity

• Newton’s 1st Law of Inertia     

• Newton’s 3nd Law of Motion  

• Newton’s 2nd Law of Motion

Answer explanation

(I)nertia is the (I)st Law

 Energy from the Sun travels to the Earth by _________________.

• conduction

• radiation 

• insulation

What kind of change is a chocolate bar melting?

• chemical because it is a phase change

• physical because it changes shape

• physical because it bubbles and releases gas

• chemical because it is not a chocolate bar anymore

Answer explanation

remember:

Physical = Phase change

chemical = something new forms

Tags

NGSS.MS-PS1-4