Physics
Grade-7
Easy
Question
Energy can be transferred through:
- Space only
- Matter only
- Both space and matter
- None of these
Hint:
Both space and matter
The correct answer is: Both space and matter
Electromagnetic waves are waves that can travel through empty space or matter.
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Continuous vibrations at the source create:
Continuous vibrations at the source create:
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In which of the following media can non-mechanical waves travel?
In which of the following media can non-mechanical waves travel?
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___________ waves can be observed.
___________ waves can be observed.
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In a medium, mechanical wave travel. With the wave, which of the following quantities is moved from one point to another?
In a medium, mechanical wave travel. With the wave, which of the following quantities is moved from one point to another?
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We can ______.
We can ______.
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A pulse is a wave:
A pulse is a wave:
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A wave carries an ______.
A wave carries an ______.
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Repeated periodic disturbances create:
Repeated periodic disturbances create:
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When we throw a stone in a pond _________ is/are generated.
When we throw a stone in a pond _________ is/are generated.
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Predators are more likely to target ___________ birds in a species.
Predators are more likely to target ___________ birds in a species.
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Birds use colors and patterns to ___________ their own species.
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Colors can help birds ______________ themselves from predators.
Colors can help birds ______________ themselves from predators.
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______________ plumage may be worn for the full spring and summer in certain species, while it may only be worn for a few weeks in others.
______________ plumage may be worn for the full spring and summer in certain species, while it may only be worn for a few weeks in others.
BiologyGrade-7
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___________ is a bird with a rare but not unheard-of plumage variation, such as very light or very black plumage, which is commonly a sign of leucism or melanism.
___________ is a bird with a rare but not unheard-of plumage variation, such as very light or very black plumage, which is commonly a sign of leucism or melanism.
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Pick the odd one out.
Pick the odd one out.
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