Electric Current and its Effects Sample Questions for Class 7
Question 1
Metamorphic rocks can be formed from
A. igneous rocks.
B. sedimentary rocks.
C. metamorphic rocks.
D. all rock groups.
Question 2
A force that opposes motion between two surfaces is called .
A. speed
B. acceleration
C. weight
D. friction
Question 3
What is the dependent variable?
A. the part of the experiment that remains the same
B. the part of the experiment that is changed
C. the thing that is always the same in all experiments
D. the part that is changed as a result
Question 4
A force that makes objects pull toward each other is known as .
A. friction
B. gravity
C. gear
D. lever
Question 5
Human activities can threaten biodiversity. What does the government enforce so that endangered species can be protected?
A. choices
B. strategies
C. codes
D. laws