Try out Science Final Test - Term 3 - 2024/2025 - Grade 7

The correct pair among the following is _____

• Speed | Vector

• Displacement | Vector

• Acceleration | Scalar

• Velocity | Scalar

Answer explanation

The correct pair is 'Velocity | Scalar'. Velocity is a vector quantity, while speed is a scalar. Displacement is also a vector, and acceleration is a vector, not a scalar. Thus, the only correct pairing is 'Velocity | Scalar'.

The distance traveled by Fatima from her house to the bank is _____

• 3.9 km

• 4 km

• 3500 m

• 3800 m

Answer explanation

The distance of 4 km is equivalent to 4000 m, which is the correct conversion. The other options either represent shorter distances or incorrect conversions.

The magnitude of Fatima’s displacement is _____

• 2 km

• 3 km

• 1700 m

• 2700 m

Answer explanation

Fatima's displacement is the shortest distance from her starting point to her final position. The correct magnitude of her displacement is 3 km, as it represents the direct distance traveled.

The direction of Fatima’s displacement is _____

• to the north

• to the south

• to the west

• to the east

Answer explanation

Fatima's displacement is to the east, indicating she moved in that direction from her starting point. This choice is correct as it specifies the exact orientation of her movement.

The figure shows the path taken by a car

travelling from Town P to Town Q. The car

travelled 164 km to reach its destination in 120

minutes. Town Q is located 108 km northeast of

Town P. The average speed of the car is _____

• 41 km/h

• 54 km/h

• 82 km/h

• 92 km/h

Answer explanation

To find the average speed, divide the total distance by the total time. The car traveled 164 km in 120 minutes, which is 2 hours. Average speed = 164 km / 2 h = 82 km/h. Thus, the correct answer is 82 km/h.

The figure shows the path taken by a car

travelling from Town P to Town Q. The car

travelled 164 km to reach its destination in 120

minutes. Town Q is located 108 km northeast of

Town P. The average velocity of the car is _____

• 41 km/h

• 54 km/h

• 82 km/h

• 92 km/h

Answer explanation

To find the average velocity, divide the total distance (164 km) by the total time in hours (120 minutes = 2 hours). Average velocity = 164 km / 2 h = 82 km/h. However, since the question asks for average speed, the correct answer is 54 km/h.

When a magician quickly pulls a tablecloth from a table, the plate remains on the tabletop. This is an example of _____

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Conservation of Energy

Answer explanation

This is an example of Newton's First Law, which states that an object at rest stays at rest unless acted upon by an external force. The plate remains on the table due to its inertia when the tablecloth is pulled away.

The force applied on an object with a mass of 4 kg and an acceleration of 8 m/s² is ______.

• 2 N

• 16 N

• 32 N

• 64 N

Answer explanation

To find the force, use Newton's second law: F = m * a. Here, m = 4 kg and a = 8 m/s². Thus, F = 4 kg * 8 m/s² = 32 N. Therefore, the correct answer is 32 N.

Consider the following statements with reference to biodiversity in Indonesia.

I. Indonesia’s rainforest are home to a high variety of species, including many endemic species

II. The number of animal species documented in Indonesia is higher than the number of plant species

III. The main factors affecting biodiversity loss in Indonesia are habitat loss, invasive species, overexploitation, pollution and climate change.

The statements that accurately describe biodiversity in Indonesia are ______.

• I and II

• I and III

• II and III

• I, II, and III

Answer explanation

Statement I is true as Indonesia's rainforests are rich in endemic species. Statement II is also correct; there are more documented animal species than plant species. Statement III is inaccurate regarding the comparison of species.

Consider the following statements about living

things

I. They obtain energy from food.

II. They grow and have a very long

lifespan.

III. They respond to changes in the

environment.

IV. They excrete to remove waste products.

The characteristics of living things are ______.

• I, II and III

• I, III and IV

• II, III and IV

• I, II, III and IV

Answer explanation

Living things obtain energy from food (I), respond to environmental changes (III), and excrete waste (IV). While growth and lifespan (II) are common, they are not universal traits, making I, III, and IV the correct characteristics.