Exploring Energy and Forces Quiz

A solar panel converts sunlight into electricity to power a fan. Which of the following correctly describes the energy conversions taking place?

• Light energy → Kinetic energy → Electrical energy

• Light energy → Electrical energy → Kinetic energy

• Electrical energy → Light energy → Kinetic energy

• Kinetic energy → Electrical energy → Light energy

A plant uses the glucose it produces during photosynthesis for various purposes. Which of the following is NOT a way a plant uses glucose?

• For growth and repair of cells

• As a source of energy for life processes

• To produce oxygen during respiration

• To make cellulose for cell walls

When a ball is dropped from a height, which energy conversion takes place as it falls?

• Kinetic energy → Potential energy

• Chemical energy → Kinetic energy

• Potential energy → Kinetic energy

• Thermal energy → Kinetic energy

A student pushes a heavy box across the floor. The box eventually stops moving. Where did the kinetic energy of the box go?

• It was converted into potential energy

• It was converted into heat energy due to friction

• It was converted into chemical energy

• It disappeared completely

Which part of the plant cell is responsible for capturing light energy during photosynthesis?

• Mitochondria

• Cell wall

• Chloroplast

• Vacuole

A green plant is placed in a dark room for several days. What will most likely happen to the plant?

• The plant will grow faster as it conserves energy

• The plant will continue photosynthesis using stored water

• The plant will be unable to perform photosynthesis and will eventually wilt

• The plant will switch to absorbing more minerals to compensate

Two forces act on a stationary book on a table. The weight of the book acts downward and the normal force from the table acts upward. What can be said about these two forces?

• The weight is greater than the normal force

• The normal force is greater than the weight

• The two forces are equal and the book is in equilibrium

• There are no forces acting on the book

Which of the following best describes the Law of Conservation of Energy?

• Energy can be created from nothing if enough force is applied

• Energy cannot be created or destroyed, only converted from one form to another

• Energy is always lost as heat during every conversion

• Energy can only exist in the form of kinetic or potential energy

A plant absorbs water through its roots and carbon dioxide through its leaves. What role does water play in photosynthesis?

• Water provides the carbon atoms needed to make glucose

• Water is a raw material that is broken down to release hydrogen used in making glucose

• Water is produced as a final product of photosynthesis

• Water carries light energy into the chloroplasts

A stretched rubber band is released and it flies across the room. Which energy conversion is taking place?

• Kinetic energy → Elastic potential energy

• Chemical energy → Kinetic energy

• Elastic potential energy → Kinetic energy

• Thermal energy → Kinetic energy