Scientific Investigations: Variables/Controls
Authored by Bria Nakonecznyj
Science
8th Grade
NGSS covered
Used 7+ times
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10 questions
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1.
MATCH QUESTION
1 min • 1 pt
Then match each part of the experiment to the correct type of variable:
you change on purpose to test its effect
Independent Variables
stay the same to keep the test fair
Control Variables
you measure or observe to collect data
Dependent Variables
Tags
NGSS.MS-PS2-2
2.
CATEGORIZE QUESTION
3 mins • 3 pts
Match each variable to its role in the experiment based on the reading
Groups:
(a) Independent Variable
,
(b) Dependent Variable
,
(c) Control Variables:
distance from lamp
beaker size
type of light (infrared vs. visible)
lamp wattage
temperature of water over time
water volume
Tags
NGSS.MS-PS3-4
NGSS.MS-PS1-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the dependent variable in the radio signal strength experiment?
Signal strength received
Brand of the radio transmitter
Distance between transmitter and receiver
Signal frequency
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the radio signal strength experiment, which of the following is NOT a control variable?
Signal frequency
Distance between transmitter and receiver
Type of barrier material
Brand of the radio transmitter
Tags
NGSS.MS-PS2-5
5.
MATCH QUESTION
1 min • 3 pts
Based on the experiment description, decide what’s being changed, what’s being measured, and what stays the same.
Angle of the solar panel
Dependent Variable
Voltage or energy output
Control Variables
Light source brightness,
Independent Variable
Tags
NGSS.MS-PS2-2
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What needs to be controlled so the solar panel test gives accurate results?
Type of wire used to connect the solar panel
Light source brightness
Distance from light
Type of solar panel
Tags
NGSS.MS-ETS1-1
NGSS.MS-PS3-4
7.
DROPDOWN QUESTION
1 min • 3 pts
✅ Independent Variable: (a)
✅ Dependent Variable: (b)
Tags
NGSS.MS-PS3-1
NGSS.MS-PS3-5
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