Science LEAP practice Session 3

Front

Why can a dog's brain process more information about smell than a rabbit's brain?

Back

Dogs take in more information because they have at least 10 times as many smell receptors as rabbits have.

Front

How does a rabbit process information from its eyes?

Back

A rabbit's eyes send signals to its brain so that the rabbit can decide how to respond.

Front

How does a rabbit know if it is in danger?

Back

The rabbit's brain compares memories to information from the environment.

Front

Why are dogs able to hunt rabbits by sight and how can rabbits see the dogs before they get close?

Back

Dogs have eyes that face forward that allow them to easily see and follow rabbits. Rabbits have eyes on the sides of their heads that allow them to see the dogs before they get close to them.

Front

Why does Jon hear a difference in volume between a hard and soft strike of flint?

Back

More energy is transferred from the objects to the air when two objects collide at a higher speed.

Front

Ana strikes the flint hard with the steel rod. What is best supported by the observation that a spark is produced?

Back

Energy is transferred to the flint.

Front

What evidence best supports that energy has been transferred to the flint when a spark is produced by striking the flint with a steel rod?

Back

Heat and light are created.

Front

Why did the air temperature increase from 18°C to 19°C after Jon struck a rock with a steel rod?

Back

Heat energy transferred to the surrounding air when the objects collided.

Front

Jon and Ana investigate whether materials other than a steel rod and flint can be used to start a fire. They push a stick of wood against a groove in a board made of a softer wood. Which question could Jon and Ana investigate to determine whether this method can start a fire?

Back

Does the stick create heat energy when it is pushed against the board?

Front

Rock layer X is made of rocks made of silt and salt, with fossils of fish. Rock layer Y is made of rocks made of salt. Rock layer Z is made of rocks made of silt, salt, and sand. Which statement best explains one of these layers of rock?

Back

Layer X was once under the ocean.