Collision theory states that for a chemical reaction to occur, the reacting particles must ____________ with one another.

• disintegrate

• collide

• divide

• share

Which reaction is it when energy releases or gives off heat?

• Endothermic process

• Reverse osmosis

• Exothermic reaction

• Enthalpy change

Tags

NGSS.HS-PS1-4

Because energy takes many forms, only some of which can be seen or felt, it is defined by its effect on matter.  Thermal energy results from atomic and molecular motion; the faster the motion, ________________________.

• the atoms keep their arrangement

• the STP is diminished

• the greater the thermal energy

• the molecules reach equilibrium

Tags

NGSS.MS-PS1-4

In physics, ___________ is the change in position of an object with respect to its surroundings in a given interval of time.

• distance

• displacement

• motion

• force

Even if you are standing completely still, are you still moving?

• Yes

• No

• Maybe

• BRB

In order for us to describe what relative motion is, we need to establish what the _________ of reference is?

• position

• location

• frame

• distance

To describe the position of a person in an airplane, which would we use as the reference frame?

• Earth

• the airport

• the runway

• the airplane

___________ is the science aimed at describing the fundamental aspects of our universe.

• Chemistry

• Physics

• Biochemistry

• Ecology

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The theory of relativity was developed by _____________ in 1905.

• Albert Einstein

• Isaac Newton

• Galileo

• Charles Darwin

Because of the way gravity affects space and time, Einstein stated that gravity affects what?

• relative motion

• the force of gravity on Earth's surface

• centripetal forces

• the space-time continuum