in the morning while the sun when the sun is rising
at midday when the sun is directly overhead
Giải thích
The correct answer
at midday when the sun is directly overhead
in the morning while the sun when the sun is rising
in the evening when the sun is setting
none of the above
1/1
Choose the correct answer.
When the sun gets lower in the sky, shadows get______.
longer
darker
gone
shorter
Giải thích
The correct answer
longer
gone
shorter
darker
1/1
Use the appropriate word to fill in the gaps.
darker
darker
opaque
opaque
transparent
transparent
brighter
brighter
On a sunny day, you may want to stay in the shade. You need to find somewhere where the Sun’s hot rays cannot reach you. A shadow forms when light from a light source is blocked by an
object. The area where there is a shadow is
because less light is reaching it.
Giải thích
The correct answer
On a sunny day, you may want to stay in the shade. You need to find somewhere where the Sun’s hot rays cannot reach you. A shadow forms when light from a light source is blocked by an
opaque
object. The area where there is a shadow is
darker
because less light is reaching it.
1/1
Match the systems with appropriate activities.
The light may pass straight through the object. We say that it has been transmitted
The light may be absorbed by the object. (The object gets a little warmer.)
The material is transparent
The material is opaque.
Giải thích
The correct answer
The light may pass straight through the object. We say that it has been transmitted
The light may be absorbed by the object. (The object gets a little warmer.)
The material is transparent
The material is opaque.
1/1
Choose the correct answer.
When the Sun is behind you, your shadow is ______.
at the side of you
not there
behind you
in front of you
Giải thích
The correct answer
in front of you
behind you
at the side of you
not there
1/1
Use the appropriate word to fill in the gaps.
A shadow forms when anobject blocks the light. It forms because light travels in straight lines – it cannot bend round corners.
Đáp án
A shadow forms when an
opaque
object blocks the light. It forms because light travels in straight lines – it cannot bend round corners.
Giải thích
The correct answer
opaque
1/1
Use the appropriate word to fill in the gaps.
The light may bounce off the object. We say that it has been.
Đáp án
The light may bounce off the object. We say that it has been
reflected
.
Giải thích
The correct answer
reflected
1/1
Choose the correct answer.
Shadows are longest during _______.
midnight
morning and evening
noon
night
Giải thích
The correct answer
morning and evening
night
noon
midnight
1/1
Choose the correct answer.
Which light source causes shadows in the outdoor environment?
The Sun
The house
The lightbulb
The School
Giải thích
The correct answer
The Sun
The house
The lightbulb
The School
1/1
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