Science Terminology for 11-13 Yr Olds --- (Jon Witts)

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A

when living cells or blood take in food or oxygen

light energy hits a surface and is converted into heat energy

Keyword(s):

to build up

the process of building up or gathering together

changes to organisms which allow them to survive or to do their job

glucose from food reacts with oxygen to produce energy

air sacs in the lungs where gaseous exchange happens

determines how loud or soft a sound is

chemical reactions that release energy without oxygen

angle between the normal and an incident ray