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Forces and Motion

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Types of Forces (Contact and Non-contact)

Subtopic

Types of Forces (Contact and Non-contact) under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    An apple falls from a tree. Which force is pulling the apple down?

    A.

    Tension

    B.

    Air resistance

    C.

    Gravity

    D.

    Magnetic force

  2. 2.

    Which force is exerted by the tires of a car on the road to allow the car to move forward?

    A.

    Friction

    B.

    Gravity

    C.

    Magnetism

    D.

    Electrostatic

  3. 3.

    What is the direction of the electrostatic force between two objects with the same (like) charge?

    A.

    They attract each other

    B.

    They repel each other

    C.

    They have no force between them

    D.

    They pull each other together

Download the worksheet for Forces and Motion - Types of Forces (Contact and Non-contact) to practice offline. It includes additional chapter-level practice questions.

Measuring Force (Newtons)

Subtopic

Measuring Force (Newtons) under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If you lift a 2 kg2 \text{ kg} box at a constant speed, about how much force in Newtons are you applying upwards?

    A.

    2 N2 \text{ N}

    B.

    20 N20 \text{ N}

    C.

    0.2 N0.2 \text{ N}

    D.

    200 N200 \text{ N}

  2. 2.

    Which of these is a unit of mass, often incorrectly used by people when they mean weight?

    A.

    Newton

    B.

    Kilogram

    C.

    Meter

    D.

    Second

  3. 3.

    Why is the Newton meter often made with a transparent casing?

    A.

    To make it look better

    B.

    To allow the user to see the internal mechanism and spring

    C.

    To make it lighter to carry

    D.

    To protect the scale from the sun

Download the worksheet for Forces and Motion - Measuring Force (Newtons) to practice offline. It includes additional chapter-level practice questions.

Balanced and Unbalanced Forces

Subtopic

Balanced and Unbalanced Forces under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If an object has a net force of 0 N0\ N acting on it, it must be:

    A.

    Stationary or moving at constant velocity

    B.

    Accelerating

    C.

    In a vacuum

    D.

    Losing mass

  2. 2.

    When you squeeze a piece of clay, the forces you apply are:

    A.

    Balanced

    B.

    Unbalanced

    C.

    Zero

    D.

    Invisible

  3. 3.

    What is the net force of a 12 N12\ N force pushing North and a 4 N4\ N force pushing South?

    A.

    16 N16\ N North

    B.

    8 N8\ N North

    C.

    8 N8\ N South

    D.

    0 N0\ N

Download the worksheet for Forces and Motion - Balanced and Unbalanced Forces to practice offline. It includes additional chapter-level practice questions.

Speed, Distance, and Time Calculations

Subtopic

Speed, Distance, and Time Calculations under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A bus travels 100100 km in 55 hours. What is its speed?

    A.

    500500 km/h

    B.

    2020 km/h

    C.

    9595 km/h

    D.

    105105 km/h

  2. 2.

    If speed is distance divided by time, what is 2525 meters divided by 55 seconds?

    A.

    125125 m/s

    B.

    55 m/s

    C.

    3030 m/s

    D.

    2020 m/s

  3. 3.

    Which of the following would usually be measured in km/h?

    A.

    A snail crawling

    B.

    A person walking

    C.

    A car on a highway

    D.

    A pen falling

Download the worksheet for Forces and Motion - Speed, Distance, and Time Calculations to practice offline. It includes additional chapter-level practice questions.

Friction and Air Resistance

Subtopic

Friction and Air Resistance under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the name for the 'gripping' force that allows a climber to hold onto a rock wall?

    A.

    Friction

    B.

    Gravity

    C.

    Air Resistance

    D.

    Inertia

  2. 2.

    A book sits perfectly still on a flat table. Is there any sliding friction acting on it?

    A.

    Yes, because it is heavy.

    B.

    No, because it is not moving.

    C.

    Yes, because gravity is pushing it down.

    D.

    No, because there is no air in the room.

  3. 3.

    Why do competitive swimmers wear tight, smooth caps over their hair?

    A.

    To keep their heads warm

    B.

    To reduce water resistance (drag)

    C.

    To increase their weight in the water

    D.

    To help them float better

Download the worksheet for Forces and Motion - Friction and Air Resistance to practice offline. It includes additional chapter-level practice questions.

Gravity and Weight vs. Mass

Subtopic

Gravity and Weight vs. Mass under Forces and Motion for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the weight of a 0.5 kg0.5\ kg loaf of bread on Earth?

    A.

    50 N50\ N

    B.

    5 N5\ N

    C.

    0.5 N0.5\ N

    D.

    0.05 N0.05\ N

  2. 2.

    Which celestial body has the strongest gravitational pull at its surface?

    A.

    The Moon

    B.

    Earth

    C.

    The Sun

    D.

    Mars

  3. 3.

    To convert mass in kgkg to weight in NN on Earth, you should approximately:

    A.

    Divide by 1010

    B.

    Multiply by 1010

    C.

    Subtract 1010

    D.

    Add 1010

Download the worksheet for Forces and Motion - Gravity and Weight vs. Mass to practice offline. It includes additional chapter-level practice questions.

Forces and Motion - IB Grade 7 Science Notes & Revision | Krit.club