🧪 Can You Pass an 8th Grade Science Test?

Study the image below carefully. What can you infer from the information?

• The sun is the primary source of energy for plants and animals

• Plants make food from carbon dioxide and water

• Living things need energy to carry out life processes

• All living things need air, food and water to survive

Fossil fuels and batteries are two sources of potential energy. How are they different?

• The chemical energy in fossil fuels is changed to electrical energy when burnt while that in batteries is changed to light energy only in a closed circuit

• The energy of fossil fuels can be destroyed while the energy in the batteries cannot

• Fossil fuels have chemical energy while batteries have electrical energy

• Fossil fuels are formed from the remains of dead plants and animals while batteries are man-made

Which of the following are examples that show a force that can change both the direction and speed of a moving object?

• A, B and C

• C only

• A and C only

• B and C only

The diagram below shows an acrobat hanging on a trapeze (swing) in a circus. Which arrow, A, B, C or D shows the direction of the acrobat's weight?

• A

• D

• B

• B and C

• C

• C and D

Which of the following statements are true?

• All of the statements

• A, B, C and D only

• B, C, D and E only

• B, D and E only

• A, B, D and E only

Which of the following shows fertilization taking place?

• C

• A and B

• A and C

• B

• A

• D

Which statement is true?

• When switches A and B are closed, Bulbs W, X and Y will light up

• When switch B is closed only, Bulb Z will light up

• When switches B and C are closed, Bulbs Y and Z will light up

• When switch A is closed, Bulbs W and X will light up

What is the energy change that occurs when John throws a stone which then hits a glass window?

• Kinetic energy --► Potential energy + Sound Energy + Heat Energy

• Kinetic energy --► Potential Energy --► Sound Energy + Heat Energy

• Potential energy --► Kinetic Energy --► Sound Energy + Heat Energy

• Potential energy --► Sound Energy + Heat Energy

The diagram below shows the length of the spring when different weights were hung from it. What is the original length of the spring most likely to be?

• 16 cm

• 21 cm

• 4 cm

• 12 cm

• 5 cm

• 19 cm

The following diagram shows three wooden blocks, X, Y and Z, of the same base area but different heights. They are tilted slowly until the boxes fall in the direction as indicated by the arrows. The angles at which the tilted boxes topple over are marked as shown in the diagram. What can you conclude from the observations?

• The greater the height of the wooden block, the smaller the angle at which it topples

• The greater the height of the wooden block, the bigger the angle at which it topples

• The base area of the wooden block affects the angle at which it topples

• The wooden block of shorter height will topple more easily

Eddy classified some objects into groups A, B or C as shown below. Which group would Eddy classify a brick under?

• A and B only

• A, B and C

• C only

• B and C only

• B only

Which of the following animals belong to Group X in the diagram below?

• penguin

• slug

• spider

• lion

• ant

• housefly

Can you answer this question?

• A and B only

• A and C only

• A only

• C only

Which of the following represents A and B correctly?

• (A) Apple Pie, (B) Caterpillar

• (A) Guinea Pig, (B) Plastic Bag

• (A) Horseshoe Magnet, (B) Wooden Stool

• (A) Bread Mould, (B) Leather Sofa

Which of the following animals could be X and Y?

• (X) Beetle, (Y) Mosquito

• (X) Beetle, (Y) Grasshopper

• (X) Guppy, (Y) Cockroach

• (X) Mosquito, (Y) Grasshopper