Overall KS3 Science

Question 1

what force slows a plane down?

Answer 1

air resistance

Question 2

mass is…

Answer 2

what something is made of

Question 3

weight is?

Answer 3

the force of earths gravity on something due to its mass

Question 4

tension, deformation and compression

Answer 4

an object being stretched or squashed

Question 5

why does a metal fence vibrate if you hit it with a stick?

Answer 5

the energy is transferred through the fences particles

Question 6

what is the change from liquid to solid

Answer 6

freezing

Question 7

what is the change from solid to liquid?

Answer 7

melting

Question 8

what is the change from liquid to gas?

Answer 8

evaporation

Question 9

what is the change from gas to liquid?

Answer 9

condensation

Question 10

would a north and a north magnet attract or repel?

Answer 10

repel

Question 11

would a north and a south magnet attract or repel?

Answer 11

attract

Question 12

which out of these metals is magnetic:

a. zinc
b. copper
c. iron
d. gold

Answer 12

c iron

steel is slightly magnetic because it is made from iron

Question 13

what type of foods give you energy?

Answer 13

carbohydrates

Question 14

do exothermic reactions release or absorb energy?

Answer 14

they release (endothermic reactions absorb energy)

Question 15

what is the equation for work done?

Answer 15

work = force multiplied by distance

Question 16

what is the fire triangle?

Answer 16

fuel, oxygen and heat

Question 17

what is a compound?

Answer 17

two or more elements combining

Question 18

what is a mixture?

Answer 18

a mix of elements or compounds

Question 19

aerobic respiration uses?

Answer 19

glucose and oxygen to make water and carbon dioxide

Question 20

anaerobic respiration uses?

Answer 20

glucose to make lactic acid

Question 21

fermentation is?

Answer 21

glucose –> ethanol + carbon dioxide

Question 22

distillation is?

Answer 22

evaporating water leaving all the nasty stuff behind

Question 23

energy stores include

Answer 23

magnetic, thermal, chemical, kinetic, electrostatic, elastic potential, gravitational potential, nuclear.

Question 24

is nuclear fusion exothermic or endothermic (you might not know this)

Answer 24

exothermic

Question 25

which rocks are formed from magma?

Answer 25

igneous rocks

examples: obsidian, basalt and granite

Question 26

what rocks CAN be formed from sand at the bottom of a river?

Answer 26

sedimentary rocks

examples: limestone, sandstone and shale

Question 27

what rocks are formed from other rocks?

Answer 27

metamorphic

examples: slate, marble and quartz

Question 28

is amongus dead

Answer 28

yes.