Motion and Forces
Energy
Ions
Isotopes
Random
100

How far has a student travelled if their speed changed from 10m/s to 20m/s at an acceleration of 3 m/s2? (include units)

x = (v^2-u^2)/(2*a)

50 m

100

List 5 different energy stores

Nuclear, Tension, thermal, chemical, gravitational, kinetic

100

An isotope is a variety of an element with a different number of, what?

What is neutrons?

100

An ion does not have the same amount of _______ and ________.

What is protons & electrons?

100

Is the moon a luminous or non-luminous object?

non-luminous

200

If a student is walking around in a circle at a constant pace, what happens to their speed and velocity?

Their speed stays the same while their velocity constantly changes.

200

State the energy stores and transfers involved in turning on an electric fan.

chemical > electric > kinetic (Also thermal and sound)

200

The name of an isotope is the name of the element followed by a dash (-) and _____ __________ of the isotope.

What is atomic mass of the isotope?

200

An ion is an atom with a______?

What is a charge?

200

What is the unit we use to measure the pitch of sound?

Hertz

300

Which of the following graphs represents a car travelling on a motorway with cruise control on.


top  middle or bottom right

300

Use the Sankey diagram to describe why the CFL has a higher energy rating. Be specific.

4 times as much usable energy.

300

Stable isotopes have a “happy” balance of ______ and _______.

What is protons & neutrons?

300

The name of radiation that can kick out electrons from orbits.

Ionising radiation

300

What is produced by anaerobic respiration?

Lactic acid

400

An ice skater pushes harder with his leg muscle, then he begins to move faster. Which law? and why?

2nd, because an increase in force increases acceleration

400

Explain why an insulated thermos can both keep cold drinks cold and hot drinks hot.

Creates a system which minimizes heat transfer (either way)

400

An isotope releases energy in order to become stable. This process is called ___ ______.

What is radioactive decay?

400

When an atom gains an electron, it gains a ____charge

What is negative?

400

Does a sound wave travel fastest in a solid, liquid, or gas?

Solid

500

What is meant by the term 'inelastic collision' in terms of energy and momentum?

KE is lost, momentum is conserved.

500

Calculate the height of a ball if it is has a velocity of 10 m/s just before impact.

G= 10m/s2

KE=1/2mv2

GPE=mgh

5 m

500

isotopic notation of an argon atom that has 22 neutrons

What is 40 Ar

500

How does an atom release light waves?

Electrons are excited to higher shells. When they return to their normal orbit, they release EM waves.

500

Why does hot air rise above normal temperature air?

Heat causes expansion and the air becomes less dense.