4th Grade Challenge TWO

Which tool is the best one for measuring the distance around a basketball?

• graduated cylinder
• scale
• meterstick
• measuring tape

which tool would you use to record how the Venus flytrap plant catches food?

• hand lens
• telescope
• microscope
• video camera

Which task would you most likely use a microscope for?

• to measure distances and sizes
• to make observations
• to analyze results
• to make predictions

Which is best to measure with a stopwatch?

• the distance between your house and school
• the time it takes a toy car to roll down a small ramp
• how many hours an eclipse lasts
• how far a car can go on a gallon of gasoline

Which statement correctly describes scientific knowledge?

• It changes from place to place
• It is based on opinions
• It is based on facts.
• It cannot solve problems

Which example is an effect that a decrease in rainfall would most likely have?

• Plants may not get enough water and die.
• Water in ponds and lakes may freeze.
• People may become too hot and get sick.
• temperature may decrease.

Which statement correctly describes a change in position?

• It is an effect of movement.
• It is only caused by a pull.
• It is only caused by a push.
• It is an effect of change in temperature.

Which statement correctly describes a change that a force can produce?

• A push can change how much rain falls.
• A push can make some things move toward you.
• A pull can make some things move away from you.
• A pull can make some things move toward you.

Which example is a system (something with many working parts)? 

• nutrient
• rock
• car
• box

Which statement describes why the water cycle is a system?

• It brings rain to help crops grow.
• The sun heats water on the ground.
• It has parts that work together.
• Rain can turn into snow.