Science of Physics

Which of the following is an area of physics that studies motion and its causes?

• thermodynamics

• mechanics

• optics

• thermodynamics

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A baker makes a loaf of bread. Identify the area of physics that this involves.

• optics

• mechanics

• thermodynamics

• relativity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is not a step in the scientific method?

• develop a hypothesis

• make observations

• quantum mechanics

• optics

What is the SI standard unit for length?

• foot

• inch

• meter

• kilometer

Why do physicists use models?

• To make more money.

• To increase the complexity of the problem.

• To help guide experimental design.

• None of the above.

Tags

NGSS.MS-ETS1-4

Which of these is not a measure of mass?

• gram

• kilowatt

• milligram

• kilogram

Five darts strike the center of a target. The dart thrower is

• accurate.

• precise.

• Accurate and percise

• Neither

Three values were obtained for the mass of a metal bar: 8.83 g; 8.84 g; 8.82 g. The known mass is 10.68 g. The values are

• accurate

• precise

The last number in a significant figure represents what?

• the exact measurement.

• the unknown value.

The time required to make a trip of 100.0 km is measured at various speeds. From the graph above, what speed will allow the trip to be made in 2 hours?

• 20.0 km/h

• 40.0 km/h