2023 Q1 | Science Study Guide

What is Physics?

• The branch of science concerned with the nature and properties of matter and energy.

• The study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.

• The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

True or False: A scientific theory can become a scientific law.

• True

• False

Which of the following is closest in meaning to the word "hypothesis”?

• Law

• Theory

• Proposed explanation

• Fact

Tags

NGSS.MS-PS1-2

True or False: a scientific theory should undergo repeated testing.

• True

• False

Tags

NGSS.MS-PS2-5

Which of the following is a qualitative observation?

• The students are young

• The students are 16 years old

• There are 10 students in the class

Convert 8 meters to kilometers.

• .008 km

• .8 km

• .08 km

• 80 km

Convert 7 L to ml

• 7000 ml

• 70 ml

• .07 ml

• 700 ml

New tires are being tested by having cars drive down a slippery road slamming on the brakes. The researchers measure how far the car slides. What is the dependent variable in the experiment.

• The different tires on the car.

• How far the car slides.

• The type of car.

• How slippery the road is.

Tags

NGSS.MS-PS2-2

A researcher is trying to determine if eating carrots improves eyesight. She has 3 groups of participants. In group 1, they eat a 10 carrots a day, in group 2 they eat 5, and in group 3 they eat 0. She measures their eyesight before and after the experiment. What is the independent variable.

• The number of carrots each group eats.

• Their eyesight after the experiment.

• The duration of the experiment.

• The group that eats 0 carrots.

What is an inertial frame?

• A reference frame in which the observers are not subject to any accelerating force.

• A reference frame in which the observers are subject to constant accelerating force.

• A reference frame in which the observers are stationary on the earth.

• A reference frame in which the observers are in motion.