2025-26 Unit 0: The Nature of Science Review

The factor in an experiment that can change if the factor that is manipulated by the experimenter is changed is known as the

• constant.

• controlled variable or control.

• dependent variable.

• independent variable.

Tags

NGSS.MS-PS2-2

A(n) __________ is a suggested explanation for an observation often stated in the form of a question that can be answered by the results of an experiment.

• hypothesis

• law

• model

• theory

Tags

NGSS.MS-LS1-5

The SI base unit of pressure is the

• atmosphere (atm).

• pound (lb).

• Pascal (Pa).

• square inch (in²).

The SI base unit of weight is

• gram (g).

• kilogram (kg).

• Newton (N).

• pound (lb).

According to the graph, what is the density of a substance with a mass of 28 grams (g)?

• 1/28 g/mL

• 1 g/mL

• 28 g/mL

• Cannot be determined

Convert 5,284,200,000 cm to km.

• 5.2842 km

• 5284.2 km

• 52842 km

• 528420 km

Convert 0.000037 hm to mm.

• 0.37 mm

• 3.7 mm

• 370 mm

• 3700 mm

Which of the following is correctly sequenced from highest to lowest?

• Giga, Mega, hecto, milli, centi, pico, nano

• kilo, deca, deci, milli, micro, nano, pico

• kilo, centi, deci, deca, micro, milli, nano

• Tera, Mega, hecto, deci, deca, milli, micro

A rectangular section of wilderness will be set aside as an environmentally-protected area, protecting it from development and preventing humans from harvesting its natural resources. The dimensions of the section are 50 kilometers (km) by

40 km. Find the area of the section.

• 90 km²

• 2000 ^km²

• 2000 km

• 2000 m

True or false: Quantitative data includes descriptions, drawings, and photographs.

• True

• False