Instruction:
Play the video. Record the temprature of the sand in the test tubes
at regular time intervals. Then, press
Graph
to show how the
tempratures change with time.
a
b
c
a
b
c
Play
0
00
time:
min
s
Time / min
Temperature / °C
Test tube
covered with
black paper
Test tube
covered with
aluminium foil
Uncovered
test tube
0
3
6
9
12
15
18
21
24
27
30
Graph
test tube
covered with
black paper
test tube
covered with
aluminium foil
uncovered
test tube
temperature / °C
time / min
Back
Task 1
Find out in which test tube the sand warms up the most after 30 mins. Hence, determine which surface is more effective in absorbing radiation from the Sun.
The sand in the test tube covered with black paper warms up the most.
This shows that the black paper absorbs radiation from the Sun more effectively.
✖