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2. Which one of the following diagrams correctly shows how a ray of light is reflected b y a mirror?
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2. A torch was shone onto two objects, S and T, as shown below in the diagram.
The shadow formed by object T is much darker than the one formed by object S. Which of the following materials are S and T likely to be made of? Object S
Object T
(1)
Iron
Copper
(2)
Frosted plastic
Steel
(3)
Wood
Glass
(4)
Styrofoam
Frosted glass
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4. Study the diagram below carefully.
To cast a bigger shadow on the screen, we need to (1) move the pear away from torch (2) move the pear away from the screen (3) move the torch nearer to the pear (4) move the screen nearer to the pear (
)
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)
5. The diagram shows a sharp bend along a narrow road known as Cherry Lane.
Where should the mirror be place to avoid an accident between Car Y and Car X? (1) Position A (2) Position B (3) Position C (4) Position D
6. Which of the following shows the correct arrangement of mirrors in a periscope?
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)
7. The diagram below shows the shadow of a boy standing in a tennis court.
Which of the following times of the day was the boy in the court? (1) 1 p.m. (2) 5 p.m. (3) 9 a.m. (4) 11 a.m. (
)
8. A torch is shone at the three objects; a wooden cube, a basketball and an iron ball as shown below.
What will be the shape of the shadow seen on the screen?
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)
Study the mug shown below.
Which one of the following shadows can the mug cast?
(1) A only (3) A, C and D only
(2) A and E only (4) B, D and E only
Tina had three shoeboxes. A hole was made on one side of each box. She placed an object in each box. The opening of the boxes was then covered with a book, tracing paper and clear glass. She shone a torch over each box and peeped in through the hole at the side of the box as shown below.
(a) In which of the set-up above was she able to see the object clearly when she peeped through the hole at the side? ____________________________________________________________________________ (b) In which set-up was she unable to see the object clearly?
Answer "True" or "False" in each of the questions below. 1. We can see the Moon because it reflects light from the Sun.
________________
2. Stars, lightning and diamonds give out their own light.
________________
3. Opaque objects form darker shadows than translucent ones.
________________
4. Light-coloured objects absorb light while Dark-coloured ones reflect light.
________________
Choose the correct answer and write its number in the brackets.
5. A pot of flowers was placed behind a large sheet. The pot of flowers appeared blurred. Which one of the following materials is the large sheet likely made of? (1) Aluminium foil (2) Styrofoam sheet (3) Clear glass (4) Rice paper (
)
(
)
6.
Which shadows are likely to be formed by the above pencil?
(1) B and D only (2) C and D only (3) B, C and D only (4) A, B, C and D
7. Shadows of the tree and the flag pole are formed because __________ .
(1) the flag pole and the tree reflect sunlight (2) the flag pole and tree absorb sunlight (3) the source of light is far away (4) light cannot pass through the flag pole and the tree (
8. Which of the following are natural light sources? A: C: E:
Glowworm Diamonds Sun
B: D:
The Moon Stars
(1) A, B and E only (2) C, D and E only (3) A, D and E only (4) A, B, C, D and E Study the diagram below and answer Questions 9 and 10.
if the source of light is moved nearer the object, the shadow formed will (1) become smaller (2) become bigger (3) remain the same (4) disappear
(
)
)
5. If the screen is moved nearer the object, the shadow formed will (1) become smaller (2) become bigger (3) remain the same (4) disappear
1. Study the table below. Silver Ring Black Cloth
(
Glass Sheet
Fill in the blanks using the correct objects from the box above. (a) A ________________ reflects most of the light that falls on it. (b) A ________________
absorbs most of the light that falls on it.
(c) A ________________
allows light to pass through it.
12. Classify the following objects correctly into the classification table below. (4 marks) silk handkerchief clear glass container book car tyre mineral water frosted glass Transparent
Opaque
cooking oil spectacle lens Translucent
)
13. Joyce sets up the following experiment in a brightly-lit room.
(a)
What can Joyce observe when she looks through the hole in cardboard A? (1 mark)
The following are different shadows cast at different times of the da y. Fill in the blanks with the correct time given in the box above. (4 marks)
1. Tom placed a chair in the middle of a soccer court. He measured the length of the shadow formed by the chair at hourly intervals. He plotted a graph with the measurements he recorded. Which one of the graphs below would resemble the graph Tom obtained?
